Fermented tofu also called fermented bean curd, sufu, tofu cheese, or preserved tofu is a form of processed, preserved tofu. Fermented tofu is commonly used as a condiment and is consumed at breakfast to flavor rice, porridge, gruel or congee. Usually either several bricks are placed in a small bowl covered in the flavored brine or one to one half bricks are placed into a bowl. Then, chunks are broken off the brick and consumed with a mouthful of porridge or gruel. The brine may also be used for flavoring. Fermented bean curd can also be added in small amounts, together with its brine, to flavor stir-fried or braised vegetable dishes - from Wikipedia