The raw material of fermented bean curd is the "white blank" of dried bean curd. Inoculate the white blank with appropriate kinds of molds and cultivate it under appropriate conditions, and soon white hairs will grow on it-molds will multiply in large numbers.
These white hairs may look terrible, but in fact there is no need to worry, because these strains are harmless to people, and their function is only to decompose protein in white blanks and produce amino acids and some B vitamins. Rubbing the white blank, and finally curing it, it becomes fermented bean curd.
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