1. Add the green part of the spring onion, 1 clove of garlic (or 1 teaspoon of grated garlic if you don't have it), 1 tablespoon of sugar, 50 ml of sake, 25 ml of mirin, 100 ml of soy sauce, add water until the meat is submerged, bring to a boil and place on a paper towel. Cover and simmer for 30 minutes.
※Adding green onions and simmering will reduce the flavor of the meat.