Abstract: Using a dough prepared by using a material containing at least 50% by weight ratio as dried of a preliminarily gelatinized starch material, a sheet in a predetermined configuration wherein grooves which reach the edge of the sheet are formed on at least one side of the sheet, is formed. The thus obtained sheet having the grooves on at least its one side, is placed on a steel band or a mesh band so that the grooves are located downward, and baked by an oven, to obtain fabricated chips. The fabricated chips contain a low oil and fat content since baked by an oven, and have no defects in the appearance such as partially raised portions and random blisters since they have the grooves which reach the edge on at least one side.

Abstract: Expanded snacks with a hollow space therein can be produced by preparing a farinaceous raw mixture by mixing one or more farinaceous materials of the type having small swelling capacity and one or more farinaceous materials of the type having large swelling capacity, gelatinizing so as to raise the temperature of said farinaceous raw mixture to 65.degree.-90.degree. C. while maintaining the temperature within the above range for 2-10 minutes, rolling the dough thus obtained into a sheet of a uniform thickness, cutting the resulting sheet into the desired shapes and then baking the thus formed dough pieces until they become fully expanded forming a hollow space within them.