Abstract: A method for making a dehydrated mashed potato product by cooking fresh potatoes including defects, ricing the cooked potatoes by urging the same through multiple openings in a ricing barrier to form riced moist potato pieces exiting the ricing barrier separated from potato defects which do not pass through the ricing barrier, reforming (e.g., by extrusion) the riced moist potato pieces by applying pressure to form riced, reformed moist potato pieces, and drying the riced, reformed potato pieces to a moisture content of about 5–10%. A dried mashed potato product comprising dried potato pieces which reconstitute in water at 180° F. under light stirring conditions to a mashed potato product having soft lumps characteristic of fresh mashed potatoes at a concentration of about 10 g to 80 g of soft lumps per 400 g of rehydrated product.

Abstract: A method for making dehydrated, shelf-stable, puffed, rapidly-rehydratable, vegetable or fruit food pieces by puffing and drying moist food pieces (e.g. potato shreds) by conveying them in a bed through an impingement drying zone maintained at substantially atmospheric pressure in which streams of pressurized heated gas in a plurality of spaced fluid conduits exit from the conduits in spaced impinging streams at a velocity in excess of about 1,000 feet per minute are directed against the moist food pieces to cause the pieces to be suspended in a fluidized bed. In one case, the heated gas causes the moisture content of the moist food pieces to be reduced rapidly to puff them into porous pieces which exit the impingement drying zone having a moisture content of at least about 4% with a texture and appearance suitable for use as a rehydratable food piece.