2. Burn the surface of the bought pork elbow with a spray gun, clean it and wash it for later use. Put water in the pot, boil the elbow in cold water, add onion, ginger slices and cooking wine to boil, skim the blood foam, cook for 5 minutes, remove and rinse with cold water.
3. Thaw the broth in advance, add enough water to boil, add ginger, onion, garlic, aniseed, fragrant leaves, cinnamon, star anise, dried pepper and Erjing pepper, and boil again.
4. After the soup is boiled, add the cooked elbow and trotters, continue to cook, add cooking wine, salt, a large piece of rock sugar and hawthorn, and add soy sauce to add color. If you want to make your elbow skin bright and shiny, add rock sugar to make it bright and fresh.
5, turn to low heat for about 2 hours, look at the color of the elbow, the elbow will deepen after the pot. Turn off the fire easily through the elbow and pig's trotters with chopsticks.