Abstract: A microwavable package for roasting coffee beans in which the package is shaped to be relatively larger in two dimensions than in a third dimension so that it presents a generally flat appearance or configuration. The package comprises a paper outer layer and an inner layer that includes a microwave susceptor. On the interior of the package a filter is provided, and a vent permits communication between the interior and exterior. The outer layer may be variously, kraft paper, bond paper, or filter paper. The inner layer may comprise a printed dipole antenna or a thin film conductor. The vent may be at least one perforation through both the inner and outer layers or a series of perforations. In a preferred embodiment, the package includes supports for maintaining the package in a generally vertical orientation when it is placed in a microwave to roast the coffee beans contained therein.

Abstract: The invention relates to a method and an apparatus for drying or heat-treating substances or products at a pressure other than atmospheric pressure. The invention relates furthermore to banana chips dried by means of this method and banana powder produced therefrom. For drying or heat-treating, the products to be treated are loaded in transport receptacles which are subsequently charged via charging lock chambers into a treatment chamber and discharged therefrom via discharging lock chambers. For drying or heat treating, at least one microwave source is provided in the treatment chamber. After heat-treating or drying, a resting period may be scheduled. More particularly for this purpose, a vertically-oriented conveying system is provided in the treatment chamber when a longish resting period is involved. The transport receptacle is configured dished and my comprise nets on which the products are applied. The method is employed preferably for drying or heat-treating basic food material, e.g.

Abstract: A process for drying antioxidant-rich berries (such as blueberries) to preserve their antioxidant action and their antioxidant compounds is disclosed. The process may conventionally dry the antioxidant-rich berries to remove 0 to 90% of the initial mass of water associated with them, but the important step is subjecting the antioxidant-rich berries to vacuum microwave drying (VMD) at an absolute pressure of 0 to 200 millimeters of mercury (mm Hg) (preferably 30 to 60 mm Hg) and 0.1 to 2 watts of microwave power/gram of berries (preferably 0.

Abstract: The present invention encompasses methods of increasing stability of biological substances during drying and the dried compositions derived therefrom. The compositions have improved storage stability.

Abstract: The invention relates to a method and an apparatus for drying or heat-treating substances or products at a pressure other than atmospheric pressure. The invention relates furthermore to banana chips dried by means of this method and banana powder produced therefrom. For drying or heat-treating, the products to be treated are loaded in transport receptacles which are subsequently charged via charging lock chambers into a treatment chamber and discharged therefrom via discharging lock chambers. For drying or heat-treating, at least one microwave source is provided in the treatment chamber. Furthermore an infrared heating source may be provided. After heat-treating or drying a resting period may be scheduled. More particularly for this purpose a vertically oriented conveying system is provided in the treatment chamber when a longish resting period is involved. The transport receptacle is configured dished and may comprise nets on which the products are applied.

Abstract: A microwavable package includes a base to support a food product, an active microwave energy heating element is on the base to effect heating of the food product upon impingement by microwave energy. A cover spaced from and separate to the active microwave energy heating element overlies the food product. The cover includes microwave energy interactive material extending substantially over the food product and at least one layer of suscepting material interposed between the food product and the microwave energy interactive material. A plurality of apertures are formed in the microwave energy interactive material and are spaced apart about a peripheral margin of the cover. The apertures are sized to promote localized fields to enhance the at least one layer of suscepting material and promote browning of the food product when exposed to incident microwave energy.

Abstract: Potatoes are skin pared, pelletized, steamed, dried and inflated into thin bars, sprayed with seasoning without oil or with a limited quantity of oil and dried such that a snack cake containing little oil and having a crunching feel when chewed is produced.

Abstract: A process for manufacturing an oat containing cereal product having an improved stability by heat treating a mixture comprising a pre-oxidized comminuted oat material at about 100 to 250.degree. C. for about 2 sec to 60 min. Also provided is a process for preparing a comminuted oat material wherein the comminuted oat material is prepared by pre-oxidizing oat groats, bran, flakes or flour, especially dehulled, steamed and kilned oat groats, flakes or flour. The use of pre-oxidized comminuted oat material to produce an oat containing cereal product results in an oat containing cereal product having improved stability.

Abstract: Microwave snacks that include mixtures of popcorn and an expandable or puffable food pellet are disclosed. The pellets are gelatinized dough pellets which puff or expand upon microwave heating in a microwave oven. The pellets may be in the shape of cylinders, hollow barrels, spheres, chips, flakes, and the like. The popcorn and pellet mixture is preferably contained in an expandable bag or rigid tub with an oil/fat slurry. Although the popcorn requires a longer heating period to pop, the explosions created by the popcorn agitate the pellets to minimize burning and clumping of the pellets.

Abstract: A method of refreshening a bread product by heating the bread product to a temperature between 2500.degree. F. and 4500.degree. F. The bread products are maintained at this temperature range for a period of 3 to 90 seconds.

Abstract: A method of drying konjak slices in producing seasoned dried konjak slices is provided which method allows for reducing the drying time while at the same time drying the konjak slices homogeneously to their deep interior. In manufacturing dried seasoned konjak by drying seasoned konjak to a moisture content of 10 to 30%, the method for drying is characterized by effecting the drying by carrying the seasoned konjak on a heat-resistant netting 1 in an enclosed space 1 and subjecting the seasoned konjak to heated air at a temperature equal to or higher than 60.degree. C. with or without far-infrared radiation irradiation.

Abstract: The invention provides a cereal cake formed by using germinated brown rice or other germinated cereal irradiated with far infrared rays as the material, and its manufacturing method, and more particularly it relates to cereal cake and its manufacturing method characterized by heating and pressing germinated cereal irradiated with far infrared rays, not a mere cereal, to process into a specified form, and therefore by germination of the cereal, phosphorus is supplied, phosphate enzyme acts, phytic acid is decomposed into phosphoric acid and inositol, protein is bonded to amino acid, fat to essential fatty acid, starch to sugar and minerals to amino acid, so as to be absorbed smoothly in the body, zinc, other minerals and vitamins are increased several times, and in particular the starch is transformed into sugar, so that a natural sweetness is provided without any particular sweetening process.

Abstract: A process for producing dehydrated vegetables including preparing the vegetables, holding the prepared vegetables for a time and at a temperature to activate pectinmethylesterase (PME), blanching and drying. The drying includes exposure to microwave radiation at a pressure below atmospheric pressure. The invention also provides dehydrated vegetable matter obtainable by the process, a dried food product reconstitutable with aqueous liquids which includes the vegetable matter, and the product when so reconstituted.

Abstract: This invention relates to a process of and apparatus for providing at least a partial barrier to moisture vapor transfer through the surface of a material without substantially spoiling the material, a process of and apparatus for removing moisture from a material without substantially spoiling the material, and a process of and apparatus for providing at least a partial barrier to moisture vapor through the surface of a material and for removing moisture from the material without substantially spoiling the material.

Abstract: A method for producing dehydrated potato slices, specifically suitable for making French fries and French fries produced therefrom, utilizes the application of microwave energy under selected vacuum conditions and a specific range of microwave energy application to produce dried potato slices having a water activity of no more than 0.85.

Abstract: A vacuum microwave dehydration process for drying fresh mango and pineapple fruit pieces at low temperatures which results in a product with a "fresh", uncooked flavor and a unique crunchy texture with little or no shrinkage which can not be achieved through conventional air drying.

Abstract: The present invention encompasses methods of increasing stability of biological substances during drying and the dried compositions derived therefrom. The compositions have improved storage stability.

Abstract: A potato chip having no added fat and process for preparation thereof, wherein a slice of undehydrated fresh potato having no added fat and no coating of globular protein and having a thickness of about 1 to about 3 millimeters is heated in a microwave oven at high intensity, with periodic heating separated by periodic cooling for a period of time sufficient to produce a product having essentially the same flavor, color and crispness as potato slices fried in deep fat. The resulting potato chip has substantially reduced calories as compared with potato chips fried in deep fat or oil, and has essentially the same low fat content as uncooked potatoes. Optionally, the slice may be coated with a non-globular protein coating prior to microwave heating. Such a coating may include salt, non-globular protein, flavorants, spices, and/or vitamin additives, as desired, but preferably does not contain any fat which would increase the fat and calorie content of the finished potato chip.

Abstract: The invention relates to a method of sterilizing and dewatering food in a shortened length of time, still permitting the processed food to remain an elongated length of time in good taste. The inner pressure of an insulated dryer is raised by feeding nitrogen gas after evacuating the insulating dryer, and at the same time, pieces of food are exposed to an ethanol spray, so that the oxygen gas remaining in the tissue of the food may be replaced by nitrogen gas to prevent oxidization of the food. At the same time, ethanol penetrates the food well for sterilization. Next, the inner pressure of the insulating dryer is reduced by removing nitrogen gas therefrom, and the pieces of food are exposed to the far-infrared radiation to be heated, thus preventing evaporation of water from the pieces of food to prevent their temperature from being lowered, and expediting removal of water in the surrounding low-pressure atmosphere to provide semi-dried products.

Abstract: A process for maturing meat products, in particular pork products, such as ham, "coppa", bacon, sausage and the like, characterized in that the product is let in a substantially sealed environment at less than atmospheric pressure, heat being supplied to the product to compensate the heat lost by evaporation of its intrinsic water and to maintain its temperature within a predetermined range of values.

Abstract: A method and apparatus for preparing essentially fat free chips such as potato chips and the like having an appearance and taste similar to conventional chips without the use of deep fat frying is disclosed herein. The method and apparatus include exposing sliced raw potatoes and the like to a hot air fluid bed impingement oven arrangement that causes very rapid heating of the water contained in the chip and causes the chip to expand. The hot air fluid bed impingement oven arrangement preferably includes multiple dual-zone hot air fluid bed impingement ovens operating under different predetermined conditions. The slices are passed through each oven based on a desired conveyor belt speed and temperature range. The slices are then passed to a combination microwave and hot air dryer which removes entrained moisture without scorching the chips, thereby providing a lightly colored chip without a burned, overcooked taste and with an equalized moisture content.

Abstract: A microwavable food product comprises a crust which is formed of laminated pastry or dough. The crust has a uniform thickness and is provided with a pattern of depressions formed on the upper surface of the crust. The depressions include a plurality of depressions which each intersect the outer periphery of the crust. There are additional depressions in the peripheral region of the crust, and the depressions together, in the preferred embodiment, form substantially radially outwardly extending lines which run up to the outer periphery of the crust. The depressions are such that the region of each depression the thickness of the pastry is between one-half and one-third of the original thickness of the pastry.

Abstract: A process for selectively dehydrating organic matter, and at the same time eliminating insects, larvae and insect eggs that are carried by the organic matter is provided. This process leaves the product free of all toxic chemicals. The process includes the use of selected narrow bands of infrared radiation. Narrow bands of infrared radiation are selected that most efficiently penetrate the product being processed. The color of the product, its physiological properties such as oil, sugar and water content are factors considered in the selection of the vacuum, temperature, and time of the process. The process is performed in a vacuum which reduces the vapor point of the target water or solvent contained in the product being processed and permits the process to be performed at a temperature that does not harm the product.

Abstract: A dried crisp cheese piece is disclosed in a first preferred form including a nonmelting cheese dried to its final moisture content by microwave energy. The nonmelting cheese generally includes a pH of greater than about 5.7. The final moisture content of the dried cheese piece is preferably between 2 and 8% by weight. The final dried cheese piece is unpuffed and requires no refrigeration. A process for making the dried cheese piece is also disclosed. The process essentially includes subjecting the nonmelting cheese having particular thickness dimensions to microwave energy to reduce the cheese piece from an initial moisture content to a final moisture content ranging from about 2% to 8%. The drying step can be practiced using forming pans to obtain finished products having various three dimensional shapes and configurations.

Abstract: A process for making a layered and puffed pastry is disclosed. The process includes the steps of producing a dough by mixing a raw material with water, wherein the raw material does not contain a wheat flour, shaping the dough into a plurality of layers to obtain a layered dough; baking the layered dough in a thermal cycle oven; and drying the baked layered dough with microwaves, radio waves or infrared rays to obtain the layered and puffed pastry.

Abstract: The invention relates to a process for producing popped grain products enriched with vitamins, minerals and/or trace elements, especially popcorn. Before or during popping of the raw grain kernels a predetermined amount of vitamins and/or minerals and/or trace elements dissolved or dispersed by themselves alone or in a suitable carrier substance are placed in a suitable container in which the raw grain kernels are already located. The added micronutrients are heat treated together with the grain kernels for 1 to 5 minutes at a temperature from 130.degree. to 280.degree. C., or with microwaves at 400 to 1500 watts. At least most of the amount of micronutrients used are absorbed by the popping grain kernels and are uniformly distributed in them, so that a ready-to-eat popcorn product enriched with micronutrients is obtained.

Abstract: The present invention provides a microwaveable food product composite containing a coating food product and a mode filtering structure wherein the food product has a crumb coating having an average crumb size of greater than 1.5 mm and an air gap of from 1 to 6 mm between the food product and the mode filtering structure such that the electric field strength generated within the mode filtering structure, when used in a commercially available microwave oven, is greater than 20 kV/m, but below the breakdown voltage of air. Such composite products are useful in enhancing the heating of the surface layer of the coated food product by a microwave energy.

Abstract: Vegetable snacks without fat are produced by placing sliced objects such as potato slices (3) on a net belt (1) in a single layer and by first carrying them through a pre-drying zone (5) and then a treatment zone (6) where the potato slices are puffed. The puffed potato slices (3') are then carried to a post-drying zone (7) and conveyed through same by a belt (2) whereafter the finished potato chips (3") are packed. In all heating zones (5,6,7) there may be used heating elements (4) treating the potato slices with infrared heat radiation, if desired, by two-sided treatment by further heating elements or reflectors (10).

Abstract: The invention relates to a method of germinating and drying cereal such as rice, wheat, soybean and corn seeds, in which a husked cereal is subjected to moisture treatment to germinate the cereal. The germination is suspended after germinated cereal is produced. The germinated cereal is dried at a temperature of about 30.degree. C. and irradiated with far infrared rays to dry the inside thereof and cause absorbed nutrients of the germinated cereal to be readily extractable.

Abstract: A method of processing potatoes or vegetables to dehydrated hash browns or other forms is disclosed where cooked and cooled potato slices are subjected to a second cooking time to improve flavor, texture and composition. The potato slices are further cooled to a chilled temperature which modifies the starch content of the potato so that the potato can be easily processed to smaller sizes, shapes or dimensions. When processed to a smaller size, shape or dimension, the potato material is contacted with a lubricating substance devoid of water which reduces or prevents the potato pieces from sticking together and improves the composition of the dehydrated potato pieces. The process of the present invention improves the flavor, texture and composition of the potatoes, both during the processing steps and at later rehydration. The process of the present invention also merely modifies the starch content of the potatoes without having to remove the starch and/or add the starch back in at a later time.

Abstract: Disclosed is a method for preparing shelf-stable, ready-to-eat rice products. The method involves coating pregelatinized rice grains with an emulsifier. A food acid and glucono-delta-lactone are then added to the coated rice to lower the pH to 4.6 or less. The rice is then thermally treated at a temperature and for a time sufficient for sterilization. The resulting products have the same or superior texture, appearance, and flavor when compared to other commercially produced, shelf-stable, ready-to-each rice products.

Abstract: A method of manufacturing a wafer comprises a series of steps. First, one proceeds with baking a mixture of flour and water to form sheets of bread. The sheets of bread are then thoroughly hydrated. The hydrated sheets are passed through a pair of roll cutters having complementary cutting surfaces, to cut a plurality of wafers, and a quantity of scrap. One then sorts the cut, hydrated wafers from the scrap by passing the wafers and scrap through a sorting drum to separate the wafers from the scrap. One then proceeds, arranging the wafers in a single horizontal layer on a surface that is substantially transparent to radiant heat, and exposes the single layer of wafers to radiant heat from above and below, to dry said wafers evenly and substantially without warping or bulging.

Abstract: A process of producing fat free chips cooks the chips and while at elevated temperature and containing sufficient moisture to form the desired pore structure in the chips subjects the chips to sub-atmospheric pressure to expand the moisture into stream and form small pores within the chip structure to provide a cooked fat free product have a similar texture and taste to that of convention deep fried chips.

Abstract: A new form of dried krill is provided by a plurality of substantially separate whole dried krill carcasses substantially all of which have a natural red color and sufficient strength and integrity to withstand normal handling without crumbling into small pieces and retain a strong wholesome fish aroma and flavor. The krill are dried by a method wherein a sequence of energy applications are applied at pressures below atmospheric and the surface of the product simultaneously swept by air to remove moisture. During the process the krill are subjected to a tumbling action. The energy applications are preferably microwave energy applications.

Abstract: The invention relates to a method of coloring a crystalline material, such as sodium chloride, and a product resulting therefrom. The method provides for a step of exposing a mixture of crystalline product and liquid coloring agent to microwave energy for a time sufficient to cause drying of the mixture. When mixed with table salt and other crystallized materials, a liquid food dye containing propylene glycol can be used in the concentration of between 0.1 and 2% by total weight.

Abstract: Cooking of dough-based food products such as corn tortillas is effected with a considerably reduced cooking time by applying to the uncooked tortilla very low and low frequency radio frequency waves simultaneously on both sides of the tortilla in order to quickly cook both surfaces of the tortilla. This cooking forms the capping layers that retain a high degree of moisture within the body of the tortilla without unduly drying it. The radio frequency waves are preferably applied by an antenna formed by two parallel arrays of electrodes, one on each side of the tortilla, the arrays of electrodes having alternate electrodes of opposite polarity to constitute dipoles which irradiate the radio frequency waves approximately parallelly to both sides of the tortilla.

Abstract: Cooking of food products and particularly of dough-based food products such as corn tortillas is effected with a considerably reduced cooking time by applying to the uncooked food product infrared radiation waves simultaneously on both sides of the food product in order to quickly cook both surfaces of the same thus forming capping layers that retain a high degree of moisture within the body of the food product without unduly drying the same. The infrared radiation waves are preferably applied by means of an optical arrangement formed by two parallel arrays of infrared emitters, one on each side of the food product, said arrays of emitters having a plurality of resistive elements to generate said infrared radiation and optical reflectors to direct said radiation perpendicularly to both sides of the food product.

Abstract: Disclosed are puffed multilayered R-T-E breakfast cereal pieces and methods of preparation. In preferred embodiments, the cereal pieces have at least three cereal layers. The bulk density ranges from about 0.06 to 0.15 g/cc. The methods for fabricating the present multilayered R-T-E cereal pieces comprise: A) preparing at least three separate sheets of cooked cereal dough(s), B) layering the sheets with pressure to form a laminated sheet, C) forming individual pieces from the laminated sheet, D) drying the pieces to 9% to 13% moisture, and E) high intensity microwave puffing the pieces to form R-T-E cereals with multiple layers. The high intensity microwave field is characterized by a field strength of about 150 to 350 V/cm.

Abstract: A method for the preparation of polysaccharide derivatives comprises reacting at least a saccharide, such as glucose, maltose or glucose syrup, a "food grade" polycarboxylic acid, such as citric acid, or inorganic acid, such as phosphoric acid, which also acts as catalyst, and optionally a polyol, such as serbitol, under the influence of electromagnetic waves to give a reaction product at a temperature of 140.degree.-300 .degree. C. Preferably, the envisaged reaction is carried out in a commercially available microwave oven having a wave frequency in the range of 900-2500 MHz. The products obtained can be incorporated as low-calorie "bulking agents" in diet foods, such as dessert, cake and the like.

Abstract: Shelf-stable, intermediate-moisture potatoes are produced by blanching pieces of raw potatoes in a heated infusion solution containing glycerol and sodium chloride, draining and cooling the infused potato pieces and drying the infused potato pieces such that the pieces have a water activity of below 0.85%. In one embodiment, blanching is performed by soaking the pieces in an infusion solution from 1 to 3 minutes at a temperature of at least 200.degree. F. (93.3.degree. C.) where the solution contains at least 5% sodium chloride and at least 10% glycerol.

Abstract: The present invention provides methods for improving the baking properties of cake flour using either high intensity dielectric heating, (10 GHz to 3 MHz) and/or radio frequency heating (300 MHz to 3 MHz). The treated cake flour is intended as a substitute for chlorinated cake flour. The present unchlorinated, dielectrically heated treated cake flour is an essential ingredient in dry mixes for batter baked goods especially high sugar-to-flour ratio layer cakes. In addition to other dry mix ingredients, preferred dry mixes additionally essentially comprise about 0.15% to 0.45% triglycerol monostearate for even greater enhancement of finished baked goods' volume. The method comprises exposing cake flour having a moisture content of >8% to sufficient amounts of radio frequency energy to heat the flour to a temperature of about 230.degree. to 270.degree. F. and to a finished moisture content of less than 6%.

Abstract: A microwaveable mixture useable for preparing a microwaveable popcorn product with the sugar-base flavoring is provided. The mixture includes unpopped popcorn a sweetening blend and a glazing blend. The sweetening blend includes an oil component and a crystalline sugar component. The glazing blend includes oil and corn syrup. Preferred blends, mixtures and methods of use are provided.

Abstract: A process for preparing potato chips, shoestring potatoes and other tuber chips in which no additional fat content is added to the potato and none of the natural foodstuffs are removed. The process comprises the steps of slicing a potato or other tuber to produce a plurality of slices or strips of the desired configuration, heating the slices or strips to a temperature and for a period of time sufficient to remove from about fifty to eighty percent of the moisture thereform, and microwave heating the slices or strips to produce a product having substantially the same flavor, color, crispness and slightly greasy appearance as deep-fried products. The slices or strips can be subjected to a second microwaving step at a reduced power level to reduce the moisture content of the product for a longer shelf life.

Abstract: The present invention provides methods for improving the baking properties of cake flour using microwave heating. The microwave treated cake flour is intended as a substitute for chlorinated cake flour. The present unchlorinated, microwave treated cake flour is an essential ingredient in dry mixes for batter baked goods especially high sugar-to-flour ratio layer cakes. In addition to other dry mix ingredients, preferred dry mixes additionally essentially comprise about 0.15% to 0.45% triglycerol monostearate for even greater enhancement of finished baked goods' volume. The method comprises exposing undehydrated cake flour having a moisture content of 12%.+-.2% to sufficient amounts of microwave energy to heat the flour to a temperature of about 230.degree. to 270.degree. F. and to a finished moisture content of less than 6%. Preferred microwave flours are additionally characterized by a peak pasting viscosity of at least 400 Stir Number Units.

Abstract: Methods are disclosed for producing barley food ingredients, comprising the steps of pearling, tempering and stabilizing grain from barley lines having the waxy phenotype, and thereafter forming the grain into a cereal ingredient. Pearling the grain may comprise removing from about 5 weight percent to about 15 weight percent of the bran and germ. Tempering may comprise achieving a moisture content of about 12% to about 16% in about 2 to about 3 hours. Stabilizing the grain may comprise heating the grain in a bulk material radiation processor, preferably to a temperature between about 235 and 260 degrees Fahrenheit for a time between about 1 and about 7 minutes. Cereal ingredients may be formed by rolling the grain to a flake thickness from about 0.007 to about 0.030 inches. Barley food ingredients and compositions are disclosed, including cereals and snack foods.

Abstract: In order to stabilize hop products by drying at a circulating air temperature of 60.degree. to 80.degree. C. to a residual moisture content of the dried hop products of between 12 and 14% by weight, the hop product is subjected after drying to a short period of thermal irradiation or to a temperature treatment at 60.degree. to 90.degree. C. under inert gas conditions.

Abstract: Low-fat pork skin pellets can be produced by steam cooking pork skin portions and if necessary oil cooking the steam cooked portions to produce pork skin pellets. The pork skin pellets are then placed in a microwavable container. When cooked in a microwave oven, the pork skin pellets puff to produce a pleasant tasting crispy pork skin snack food.

Abstract: High intensity microwave heating methods for heat setting food foams are provided. The methods comprise the step of subjecting a quantity of edible foams to a brief exposure to high intensity (>110 V/cm) microwave field for about 5 to 30 seconds. The high intensity microwave heating heat sets the foam to provide a stable structure. Thereafter, the heat set structures are then dried using low temperature dried to desired moisture contents ranging from about 1% to 6%. The microwave heat set foam pieces exhibit a homogeneous (i.e., without voids or irregularities) texture and a crisp, light eating quality. The edible foam products exhibit extended bowl lives and find particular suitability for use as additives to ready-to-eat cereal products. Preferred embodiments comprise high levels of fruit puree solids which by virtue of the short heat setting and low temperature drying steps exhibit high natural flavor levels.

Abstract: Microwave methods for puffing thick ready-to-eat cereal flake pieces are provided in full or partial substitution for conventional toasting and puffing methods. The methods comprise the step of subjecting a thick (>0.025 inch) cereal base piece to a brief exposure to a high intensity (>125 V/cm) microwave field for about 5 to 25 seconds. The microwave puffed cereal pieces exhibit superior puffed volume and a lighter texture compared to finished products toasted and puffed by known methods. The present methods are particularly suitable for puffing thicker flakes fabricated from whole grain, e.g., whole wheat based cooked cereal doughs.

Abstract: The present invention provides a system for cooking and/or heating a food product rapidly with the use of microwave and hot oil heating, which are applied simultaneously during the entire or partial period of the cooking and/or heating time. The food product may be frozen prior to processing, and may consist of an outer wrapper and an inner filling. It is desirable that after a relatively short cooking and/or heating process, the outer wrapper becomes crispy with a uniform golden-brown color while the inner filling reaches a desired temperature.