Pulled Pork Sliders

Ingredients

• 2 teaspoons dry mustard
• 2 teaspoons sweet paprika
• 2 teaspoons salt
• 1 teaspoon freshly ground black pepper
• 1 teaspoon ground white pepper
• 1 garlic powder
• 1 teaspoon teaspoon onion powder
• 1/2 to 1 teaspoon cayenne pepper
• 1 Boston butt (bone-in pork shoulder roast), 5 to 7 pounds
• 2 cups distilled white vinegar
• 1/2 cup Dijon mustard
• 1/2 cup water
• 1 tablespoon salt
• 2 teaspoons freshly ground black pepper
• 24 small buns
• 6 tablespoons butter (optional), melted
• Thinly sliced sweet or dill pickles
• South Carolina Mustard Barbecue Sauce (see step 6)