- 1 cup prepared yellow mustard
- 1/3 cup white vinegar
- 1/3 cup balsamic vinegar
- 1/4 cup water
- 1/4 cup white sugar
- 2 tablespoons chili powder
- 1/4 teaspoon cayenne pepper
- 4 grinds ground black pepper
- 2 tablespoons ketchup (optional)
- 1 teaspoon soy sauce
- Combine yellow mustard, white vinegar, balsamic vinegar, water, sugar, chili powder, cayenne pepper, and black pepper in a saucepan; bring to a boil. Reduce heat to medium-low and simmer for 30 minutes. Add ketchup and soy sauce and simmer for 10 minutes more.