- 1 (15 ounce) can tomato sauce
- 1/4 cup cider vinegar
- 2 tablespoons sweet curry powder
- 2 tablespoons sweet paprika
- 2 tablespoons white sugar, or more to taste
- 1/4 teaspoon cayenne pepper, or more to taste (optional)
- salt and ground black pepper to taste
- Combine tomato sauce, cider vinegar, curry powder, paprika, sugar, cayenne pepper, salt, and pepper together in a saucepan over medium heat; cook, stirring occasionally, until sauce is warmed and smooth, 5 to 10 minutes.