2. Method of making Achang sour bamboo shoots: The pickling season of sour bamboo shoots is in spring and autumn. When the bamboo shoots grow to a height of about 30 cm, they can be cut one by one, peeled, shredded or sliced, put in a clay pot, sprinkled with salt, and baked for a few days by the fireplace, so that the sour taste can be taken away with the food.