1. First, make water tofu with excellent soybeans, and then press the white water tofu into white dried tofu; Then add the dried bean curd into a brine. The brine here is the most exquisite, and it needs to be made of rotten pickle juice left the next year. It is pure green and natural, without any pigment, and it gives off a natural smell.

2. Seal the jar in full bloom, then bury it in the ground, and take it out after a few days. The white tofu has become a blue and black stinky tofu. When you open the dried tofu, you can see that from the inside to the outside, it is blue and dark, smells strange, and the entrance is very fragrant after frying.