A method of making a starch based food product selected from baked goods, breads, cakes, cereals, pasta, and pastries, and having 1 to 3.25 calories per gram, on a dry weight basis. The method comprises the step of mixing a type IV resistant starch with ingredients of the food product (optionally with flavor enhancers which do not raise the calories above 3.25 calories per gram), in a sufficient amount wherein a total dietary fiber content of the prepared food product, arising from the type IV resistant starch, comprises 14-60% of the prepared food product, by weight, after subsequent preparing of the prepared food product at the temperature of at least 100° C. The food product is prepared for consumption at the temperature of at least 100° C.