Unfermented soya-bean curd (4)
I believe the answer is:
tofu
'unfermented soya-bean curd' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for tofu that I've seen before include "Soya bean dish" , "Cheese-like vegetarian food" , "non-meat protein" , "Unfermented soya bean curd" , "'Soft white food, made of soy milk (4)'" .)