South milk, also known as red bean curd, is a bean curd fermented by red koji. It is purplish red on the surface and apricot yellow on the inside. It tastes fragrant with fat and wine, and it is a little sweet.

Sufu is a kind of soybean fermented food with mold (Mucor) as the main strain.

Extended data:

Sufu, also known as bean curd, is a traditional folk food that has been circulated in China for thousands of years. Because of its good taste and high nutrition, it smells stinky, and its special flavor is deeply loved by the people in China and Southeast Asia. It is an enduring delicacy.

Sufu is usually divided into three categories: green square, red square and white square. Among them, stinky tofu belongs to "Qingfang". "Big", "red and spicy" and "rose" belong to "red square". "Sweet and spicy", "osmanthus" and "spiced" belong to "white side".

References:

Sufu _ Baidu Encyclopedia