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Technically speaking, stinky tofu is made by soaking tofu in stinky brine and fermenting it. Different producers make stinky brine in different ways.

During the fermentation process of stinky tofu, the complex microbial flora in the stinky brine will decompose part of the protein of the tofu and produce alcohols, lipids, sulfur-containing compounds and heterocyclic substances; in addition , a large number of other types of volatile molecules such as ethers, alcohols, and esters are generated during the fermentation process. This is the reason why stinky tofu smells bad.

There are regional differences in the way it is made and eaten in China and around the world, and its taste is also very different, but it has the characteristics of "smelling bad but tasting delicious". Changsha's stinky tofu is quite famous, and so are the stinky tofu in Nanjing, Taiwan, Zhejiang, Shanghai, Beijing, Wuhan, Yulin and other places.

Fermented stinky tofu, part of the protein is decomposed into peptides and amino acids during fermentation, which are more conducive to digestion and absorption, but its salt content is high and should not be eaten in large quantities; fried non-fermented stinky tofu has an energy ratio of Ordinary tofu is much higher. If you eat too much, it will easily lead to excess energy.

Extended information

Identify inferior stinky tofu

Take a look: If the water of the stinky tofu is as black as ink and has small particles precipitated, it is abnormal, or It is reddish brown with sediment, and they are basically layered; these are abnormal.

Second smell: If you smell the odor on the surface of stinky tofu, whether it is pungent, foul-smelling, or metallic, these are abnormal phenomena.

Third break: Break open the tofu and take a look to see if the inside is whiter and lighter in taste. If the color difference is too big and the inside of the tofu has not been fermented like fresh tofu, it is instant stinky tofu. In addition, some small shops and stalls may be very small in offering authentic stinky tofu.

People's Daily Online - There is no "shit" in stinky tofu, the marinade is the "source of the odor"

Baidu Encyclopedia - Stinky Tofu