Slow Cooker Pulled Pork Sandwiches and Buttermilk Coleslaw recipes

Name: Slow Cooker Pulled Pork Sandwiches and Buttermilk Coleslaw recipes
Ingredients: 2 tablespoons chili powder; 1 tablespoon onion powder; 1 teaspoon garlic powder; 2 teaspoons kosher salt, plus more for slaw; 1 teaspoon black pepper, freshly ground, plus more for slaw; pinch cayenne pepper, optional; 5 lbs boneless pork butt or shoulder; 2 cups barbecue sauce, homemade or store bought; 10 to 12 soft hamburger buns; 1/2 cup mayonnaise; 1 1/2 tablespoons Dijon mustard; 2 tablespoons light brown sugar; 2 tablespoons apple cider vinegar; 2 tablespoons buttermilk; 1/2 teaspoon celery salt; 4 cups (about 1/2 head) green cabbage, finely shredded; 4 cups (about 1/2 head) purple cabbage, finely shredded; 2 large carrots, grated