Molasses BBQ Sauce

• 1 tbsp unsalted butter
• 1 red onion, minced
• 6 garlic cloves, minced

In a large heavy-bottomed saucepan, melt the butter over medium heat. Add the onion, garlic, and ginger and cook until the onion starts to soften, about 10 minutes. Stir in the mustard, vinegar, soy sauce, sugar, ketchup, Worcestershire sauce, lemon juice, chipotle chiles, and chile powder and continue cooking for 10 minutes more.

Add the tomatoes with their juice and molasses and cook