This is a basic BBQ sauce recipe than can be made using your favorite BBQ rub. Try switching out the Memphis rub with one of our other BBQ rubs, like Carolina High Country BBQ Rub, Native Texan BBQ Rub or Team Sweet Mama's KC Style Rub. For a tangier, slightly less sweet version, increase Ketchup by 1/3 cup, use only 1/3 cup molasses, and substitute white vinegar for cider vinegar and yellow mustard for Dijon mustard.
Place the onion and water together in a blender or food processor and puree until smooth. In a medium bowl, whisk together the pureed onion, ketchup, molasses, vinegar, Worcestershire, mustard and hot sauce. Heat oil in a medium saucepan over medium heat. Stir in garlic and BBQ rub, and cook, stirring constantly, until fragrant, about 30 seconds. Stir in ketchup mixture, bring to a boil and reduce to a low simmer. Simmer, uncovered, until sauce thickens, about 20 to 30 minutes. Cool sauce to room temperature before serving. Stored in a sealed container in the refrigerator, the sauce will keep for about a week.
Use as a basting, finishing or dipping sauce with your favorite grilled chicken, ribs or brisket.