Alabama BBQ Chicken on a Gas Grill | America's Test Kitchen

Ingredients

• 3/4 cup mayonnaise
• 2 tablespoons cider vinegar
• 2 teaspoons sugar
• 1/2 teaspoon prepared horseradish
• 1/2 teaspoon table salt
• 1/2 teaspoon ground black pepper
• 1/4 teaspoon cayenne pepper
• 1 teaspoon table salt
• 1 teaspoon ground black pepper
• 1/2 teaspoon cayenne pepper
• 2 whole chickens (3 1/2- to 4-pound), patted dry and split (see photos)
• 2 cups hickory wood chips
• Vegetable oil for grill grate