Chipotle Barbecue Sauce

Ingredients

• 1 tablespoon extra-virgin olive oil
• 2 cups sliced onions
• 1 1/2 cups cider vinegar
• 2 ancho chiles and 6 chipotle chiles, stemmed, seeded and roasted
• 10 large cloves garlic, roasted
• 1 cup molasses, or to taste
• 2 1/2 cups ketchup
• 1/2 cup water
• Salt, to taste

Instructions

1. In a large skillet over medium high heat, heat the olive oil and sauté onions until they are browned and completely soft, about 3 minutes.
2. Add vinegar and bring it to a simmer. Add chiles to the pan along with the garlic, molasses and ketchup; stir well to blend. Simmer for 5 to 8 minutes or until the flavors are blended.
3. Add some or all of the water to adjust the consistency. Put sauce into a blender and purée it until smooth. Strain sauce through a coarse-meshed sieve.
4. Store in an airtight container in the refrigerator for up to 8 days.