This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A protein-rich food coagulated from an extract of soybeans and used in salads and various cooked foods.

n. A protein-rich food made from curdled soybean milk.

n. cheeselike food made of curdled soybean milk

"When the curdling agent used to make tofu is calcium salt, the tofu is an excellent source of calcium."

curd   

beancurd   

Kofu   

broccoli    yogurt    asparagus    ricotta    avocado    bologna    pasta    macaroni    tortilla    eggplant