Mustard Coleslaw

Ingredients

• 3/4 cup prepared mustard
• 3/4 cup cider vinegar
• 1/2 cup sour cream
• 1/2 cup ketchup
• 1/4 cup mayonnaise
• 1 tablespoon salt
• 1/2 teaspoon cayenne pepper
• 1-1/4 cups sugar
• 2 medium heads cabbage (about 4 pounds), shredded
• 1 medium onion, finely chopped
• 1 medium green pepper, chopped
• 1 large carrot, shredded
• 1 celery rib, finely chopped