2 tablespoon sliced green onions 1 clove garlic, minced ¾ cup chicken broth or beef broth 1 tablespoon soy sauce ½ teaspoon finely shredded lemon peel 1 tablespoon lemon juice 1 teaspoon chili powder 1 ½ teaspoon brown sugar ⅓ cup peanut butter 1 tablespoon grated gingerroot or 1/4 teaspoon ground ginger unsweetened coconut milk (optional)