Thai Peanut Stir-Fry Sauce

2 tablespoons creamy peanut butter
2 tablespoons rice wine vinegar
2 tablespoons soy sauce
1 tablespoon brown sugar
1 teaspoon garlic powder
1/8 teaspoon ground ginger
cayenne pepper

Combine above ingredients and stir until creamy. (It helps to soften the peanut butter in the microwave.) Add sauce to the stir-fry during the last minute of cooking, stirring to coat food evenly.