Frozen bamboo shoots, a unique delicacy in Xiamen, are traditional snacks in Xiamen. Before cooking, soak the fresh bamboo shoots in the sand for a day, spit out the sundries, then grind them with a stone hammer, roll out all the internal organs, then put them in clean water, rinse the soil in the body, and then pick them up when they are white. Take cold well water and boil it with bamboo shoots. Dissolve collagen in boiling water to form a thick paste, put it in a small cup, and cool and freeze it. Frozen bamboo shoots? Put it in the refrigerator and eat it.