Use this recipe when making our Pulled-Pork Sandwiches.
Stir tomato puree, 1 cup water, the mustard, sugar, vinegar, garlic, 1 teaspoon salt, and the cayenne in a medium saucepan over medium heat. Simmer, stirring occasionally, until sugar has dissolved and mixture thickens, about 10 minutes. Stir in pan juices; season with salt and pepper.
Sauce can be refrigerated in an airtight container up to 2 weeks.