Slaughter the eel, cut off its head, clean and cut into pieces, put it in a water pot, take it out, drain the water, peel the garlic and wash it for later use, put it in a wok and heat it with oil, then stir-fry the garlic a few times, add ginger slices, onion slices and eel, add cooking wine and appropriate amount of water, stew it for a while, and add soy sauce.

Mushrooms and potatoes can also be added. In order to taste better, finally sprinkle with leeks.