Mustard Bbq Pulled Pork

Ingredients

• 2 tablespoons unsalted butter
• 2 1/2 cups chopped white onions
• 2 tablespoons minced garlic
• 1 cup cider vinegar
• 1 cup water
• 1 1/2 tablespoons dry mustard
• 2 tablespoons yellow mustard seeds
• 1/2 teaspoon cayenne pepper
• 1 cup granulated sugar
• 1 tablespoon Worcestershire sauce
• 1/4 cup lemon juice
• 1 tablespoon honey
• 1 tablespoon crushed red chili flakes
• 1/2 teaspoon turmeric
• 1/2 teaspoon garlic powder
• 1 teaspoon onion powder
• Salt and pepper
• 5 pounds pork shoulder, cut into 2-inch cubes