Pulled Pork Sandwiches

Ingredients

• 1 1/2 teaspoons whole coriander seed
• 1 1/2 teaspoons whole cumin seed
• 1 1/2 teaspoons black peppercorns
• 2 1/4 teaspoons coarse kosher salt
• 1 1/2 teaspoons dry mustard powder
• 1 1/2 teaspoons chile powder
• 3 tablespoons dark brown sugar
• 3 1/2 pounds boneless pork shoulder
• Hamburger or brioche buns, for serving
• 1 1/2 cups ketchup
• 1/4 cup packed dark brown sugar
• 2 tablespoons molasses
• 2 garlic cloves, minced or grated
• 1/4 cup cider vinegar
• 2 tablespoons Worcestershire sauce
• 2 teaspoons sweet or hot paprika
• 1 teaspoon black pepper
• 1 teaspoon dry mustard powder
• Pinch of cayenne
• Dash of hot sauce, more to taste
• 1 small head green cabbage, outer leaves removed, shredded (about 1 1/2 pounds)
• 1/2 small red onion, thinly sliced
• 1 large jalapeno, seeded if desired, thinly sliced
• 3/4 cup mayonnaise
• 2 tablespoons cider vinegar
• 2 tablespoons extra-virgin olive oil
• 1 teaspoon coarse kosher salt
• Black pepper