Alabama Pulled Pork Sandwiches with White Barbecue Sauce

Bahan-bahan (12 porsi)

• ½ cup light mayonnaise
• 2 tablespoons white vinegar
• 1 teaspoon freshly ground black pepper
• 1 teaspoon freshly squeezed lemon juice
• dash of salt
• 1¼ pounds pork tenderloin, (fat trimmed and discarded)
• ½ cup apple cider vinegar
• ¼ cup water
• 3 tablespoons packed brown sugar
• 2 teaspoons kosher salt
• ¾ teaspoon freshly ground black pepper
• ½ teaspoon ground cayenne pepper
• ½ teaspoon chili powder
• ¼ teaspoon garlic powder
• 2 cups all purpose flour
• 2½ teaspoons baking powder
• 1 teaspoon salt
• 1 cup mashed cooked sweet potato ((about 3/4 pound potatoes))
• 2 tablespoons packed brown sugar
• 3 tablespoons unsalted butter, (melted)
• ⅔ cup nonfat milk