Fresh pig liver cleaned, soaked in water for an hour to make white. Pot injection of cold water, put onion, ginger, anise, cinnamon, dry red pepper, pig liver at the same time. Boil the water over high heat, pour in a little cooking wine, turn to medium heat and cook for 5-10 minutes, use chopsticks to poke a few holes in the liver, when a small amount of blood will come out, turn down the heat and cook for another 10-20 minutes. Turn off the heat and simmer for half an hour. Remove to cool.