1. Soak the bone in cold water twice to soak the bleeding water; If you have an ozone machine, you'd better use it. If you usually buy meat every time, you will also put the remaining small pieces of meat skin in.

2. Cook bones and cold water in the pressure cooker. When the water boils, remove the foam. Pay attention to shovel the bottom of the pot with a flat shovel at this time, because some foam is still attached to the bottom of the pot, and it floats up after shoveling, which is convenient for removal; Asked a chef, he told me: never pour the boiling water out, just remove the foam, the taste here is good or bad;

3. Put cooking wine, a little vinegar (calcium ion is easy to precipitate in acidic environment), onion, ginger, fragrant leaves, cinnamon, pepper, aniseed and salt. It's best not to put soy sauce here, otherwise soup, stewed cabbage and yam are neither sweet nor bitter. Stew in a pressure cooker for 20 minutes;

4. Take out the bone, suck out the bone marrow with a straw, eat the meat with a small blade, and eat it with red vinegar ginger slices or garlic sauce;

Note: It is very convenient to suck the bone marrow out with a straw, and it does not pollute the bones, so as to prepare for the future.