Ingredients

• 3/4 cup mayonnaise
• 1/2 cup Dijon mustard
• 1/4 cup packaged light brown sugar
• 3 tablespoons cider vinegar
• 2 tablespoons buttermilk
• 4 tablespoons celery seeds
• 1 teaspoon salt, plus more for seasoning
• 1 teaspoon freshly ground black pepper, plus more for seasoning
• 1/8 teaspoon cayenne pepper
• 3 cups shredded green cabbage (about 1/2 head)
• 3 cups shredded red cabbage (about 1/2 head)
• 1 yellow bell pepper, finely diced
• 1 large carrot, shredded
• 1/2 cup grated yellow onion
• 1/4 cup minced fresh parsley leaves