There are two types of stinky tofu: fermented stinky tofu and non-fermented stinky tofu. Fermented stinky tofu is bottled stinky tofu, also known as folk "green square", the general large supermarkets can buy; and street snacks of the kind of deep-fried stinky tofu, is non-fermented.

Fermented stinky tofu is high protein content of high-quality soybeans as raw materials, after soaking beans, grinding, dregs, point brain, pre-fermentation, pickling, with brine, post-fermentation and other procedures made, the process will be naturally fermented and the growth of "good mold".