Finely chop green onion and garlic.
Mix brewed soy sauce, water, cooking wine, and sugar in a bowl to make the marinade.
Heat sesame oil in a pan and stir-fry green onion and garlic for aroma.
Pour in the marinade and bring it to a boil.
Use a spoon to add soft tofu and simmer lightly so the broth absorbs.
Serve the finished soft tofu stew in a bowl.