mix the soy sauce, water, sesame seeds, grated ginger, minced garlic, corn starch, ground coriander, rice vinegar, and brown sugar in a small bowl and mix until smooth. Pour into the wok and heat until bubbling and thickened.
4 tablespoon soy sauce, ⅓ cup water, 1 teaspoon ginger, 1 clove garlic, 1 tablespoon cornstarch, 1 teaspoon coriander, 2 tablespoon rice vinegar, 2 teaspoon brown sugar, 1 teaspoon sesame seeds