They found that tofu made by the
highest stirring speed (285 rpm) had a lower yield, but higher brittleness
force, hardness and elasticity than tofu made at 207 rpm. Other factors
that affected yield of tofu were whole soybean (higher yield) versus
soybean flakes [7], heating method where steam injected cooker system
had higher yield as compared to steam jacketed kettle system [8].