1. Ingredients: 500 grams of beef head, 2 pieces of green onion, 6 pieces of ginger, 3 pieces of star anise, 1 tablespoon of pepper, 1 piece of cinnamon, 3 bay leaves, 20 grams of tea, 2 tablespoons of dark soy sauce, 1 tablespoon sugar, 2 tablespoons salt, 2 tablespoons white wine.

2. Soak the beef head in clean water and change the water every ten minutes until the water becomes clear.

3. Put star anise, tea leaves, cinnamon, bay leaves, pepper and other spices into gauze and seal the bag.

4. Add water to the pot, add half a cup of white wine, put the beef in, cook until the color of the beef turns white and the volume shrinks, then turn off the heat, then take out the beef, rinse with cold water and set aside.

5. Put beef in the pot, add chopped green onions and ginger, pour in white wine, add sugar, add dark soy sauce and an appropriate amount of salt, and finally add the ingredients bag.

6. Add an appropriate amount of boiling water to the pot, cover the pot and close the valve, set the time (40 minutes), and remove and slice after cooling.