ingredients: crayfish, or duck legs, duck necks, duck intestines, duck racks, duck wings, etc., and marinades: a little cinnamon, 3 fragrant leaves, 3 star anise, 3 angelica dahurica, 1 ginger, 1 Amomum tsaoko, 2 cardamom, 2 Amomum tsaoko, 2 cloves and a little crayfish

. Add the right amount of water to the ingredients, add the marinade and add a little salt; After boiling, simmer for half an hour with low fire, soak overnight or collect juice with high fire, and store in refrigerator for 2-3 days.