Extruded starch snack foods and process

Abstract

The invention is a continuous process and a product of the process for preparing a low fat content chip-like baked snack food from a composition containing at least one ingredient having starch. Water and the ingredient having starch comprise substantially all of the ingredients of the composition. The method involves mixing and heating the composition in a cooker extruder or continuous mixer to form a dough-like consistency. In the most preferred embodiments of the invention the ingredient including starch is either a corn or a potato ingredient. The heating is conducted until the composition obtains a temperature of from about 130.degree. F. to about 260.degree. F. The composition is extruded under a pressure drop which substantially avoids expansion of the extrudate to obtain an extrudate having a water content of from about 25% by weight to about 60% by weight. The extrudate is sheeted, while hot. The sheeted composition is then laminated, reduced in thickness, formed into pieces, and baked in a conventional oven. During baking the exterior layer of the dough cooks rapidly and traps steam in the interior portion of the dough. Blisters and curls result in the final product that impart a chip-like appearance to the final product. An alternative embodiment includes applying a spray oil to the pieces before baking to obtain a final product having a flat cracker-like appearance.

Dependencies are inferred from the claim text.