1. Wash the duck and cut it into pieces, then soak it in water and soup (because the duck is oily, it is not greasy after cooking, so it needs cold water).

2. Put hot water in the casserole, add the cooked duck and cook for 40 minutes.

3. Add wax gourd strips, ginger slices, chopped green onion, garlic, sugar, salt and pepper to the cooking wine before cooking.

4. Cook the wax gourd until it is soft and rotten, skim off the floating oil on it, add coriander, chopped green onion and monosodium glutamate to taste, and then serve.