How to Make It
Preheat oven to 475°F.
Bring 4 cups water, wine, sugar, 4 teaspoons salt, red pepper, and bay leaves to a boil in a large Dutch oven. Add cauliflower head; cover, reduce heat, and simmer 20 minutes or until tender, turning occasionally. Place cauliflower on a paper towel-lined plate; discard cooking liquid.
Place cauliflower on a parchment paper-lined baking sheet; coat with cooking spray. Bake at 475°F for 30 minutes, turning and coating with cooking spray every 10 minutes. Place whole cauliflower head on a platter or cutting board.
Combine remaining 1/4 teaspoon salt, juice, shallots, thyme, mustard, and black pepper in a bowl. Let stand 10 minutes. Whisk in oil. Drizzle vinaigrette over cauliflower. Sprinkle with pomegranate arils, pine nuts, and parsley.