Western South Carolina-Style Barbecue Sauce

Ingredients

• 1 tablespoon oil
• 1/2 onion medium, minced
• 2 garlic cloves medium, minced
• 1/2 cup cider vinegar
• 1/2 cup worcestershire sauce
• 1 tablespoon dry mustard
• 1 tablespoon dark brown sugar
• 1 tablespoon smoked paprika
• 1 teaspoon kosher salt
• 1 teaspoon cayenne pepper
• 1 cup ketchup
• 1 tablespoon ground black pepper
• 2 tablespoons chili powder
• 2 tablespoons ground cumin
• 2 tablespoons dark brown sugar
• 1 tablespoon ground oregano
• 4 tablespoons smoked paprika
• 2 tablespoons kosher salt
• 1 tablespoon granulated sugar
• 1 tablespoon ground white pepper
• 1 pork roast bone-in, 6 to 8 pounds,, shoulder or butt
• 1 cup beer good quality, such as an IPA beer