Del's Basic Barbecue Sauce

Ingredients (for 2 servings)

• 1 whole — onion
• 1 clove — garlic
• 1 cup — tomato sauce
• 0.25 cup — apple cider vinegar
• 3 tbsp — vegan Worcestershire sauce or 2 tablespoons low-sodium soy sauce
• 2 tbsp — maple syrup
• 2 tbsp — unsulphured molasses
• 3 tbsp — prepared yellow mustard
• 0 whole — black pepper