1, a pig elbow. 2. Cut one side of the elbow with a knife and cook it faster when stewing. 3. scald the elbow with boiling water, skim off the floating foam and take it out. 4. Next, stew the elbow in a pressure cooker. Half a pot of water, add ginger, onion, aniseed and cooking wine. 5, pressure cooker stew for about 40 minutes, if you use ordinary pot or casserole stew, it takes 2-2.5 hours, pressure cooker stew is energy-saving and environmentally friendly. 6. Start preparing fermented milk when stewing. 7. Dissolve rock sugar in hot water, pour a whole bottle of fermented milk, and mash two small pieces of fermented milk. 8. Then, blanch the rape with boiling water and prepare for coding. A little salt and vegetables in boiling water will keep green. 10, stew the elbow for 40 minutes, then take it out and start coloring with fermented milk (casserole is better). 1 1, start curing the other elbow. 12, curing 10- 15 minutes or so, collecting juice on high fire, adding some chicken essence, then putting elbows into a plate and pouring the remaining fermented milk.