What tofu is made of (4)
(Other definitions for soy that I've seen before include "Piquant eastern sauce" , "Chinese sauce" , "Dark salty sauce" , "Sauce bean" , "Oriental sauce" .)
(Other definitions for soya that I've seen before include "Asian bean yielding edible oil and flour" , "It's used as a substitute for animal protein" , "Plant with oil-rich beans" , "nutritious bean" , "Bean protein" .)