1, formula: 2 large intestine of pig, 3 cloves of garlic, 3 slices of pepper 1 root, 3 slices of tender ginger, 2 pieces of star anise, 50_ of salt 1 spoon, 50 _ of soy sauce, 300_ of water and 300_ of pork knuckle gravy.

2. Practice: Wash the pig's large intestine with 1 tablespoon vinegar and 50 grams of flour, then clean it with water, blanch it in boiling water for 3 minutes, take it out, and rinse it with cold water for later use. Put the pork intestines and other materials made in the way of 1 into the casserole, boil them with high fire, then turn to low heat and simmer for 1 hour, and then cut them into small pieces to eat.