1 first of all, the oil content of pots and pans used for soaking sour bamboo shoots should be strictly controlled, and it is best to sterilize them by sun exposure, but they should be thoroughly cooled before use.

2. Boil a pot of water, turn off the fire after boiling and cool naturally. It is best to use natural well water as water, not pure water, which has no active substances and cannot be used. Tap water is ok, but it must be boiled and dried.

3, buy back the bamboo shoots, cut a circle on it, and then draw a knife vertically, and soon you can completely peel off the bamboo shoots inside.

4. Cut the bamboo shoots directly into the desired size, and strictly control the oil amount of the cutter and board.

5. Put the cut bamboo shoots in a sealed container.

6. Pour in cold water, seal it, and wait for a few days to eat natural sour bamboo shoots.