In one embodiment, a method comprises adding a plurality of soybeans to an extractor, the soybeans having an average protein:oil ratio of greater than 2.3, heating the soybeans, removing hulls from the plurality of soybeans, and grinding the plurality of soybeans with water at a temperature between 180° F. and 190° F. to yield a soy extract having hexanal levels of less than 50 parts per billion (ppb).