Smoke-Roasted Chicken with Horseradish Dip Recipe

Ingredients

• Two 3-1/2 to 4 pound chickens
• Coarse salt (kosher or sea) and coarsely ground black pepper
• 1/2 cup unsalted butter, melted, for basting
• 2 cups mayonnaise (preferably Hellmann's)
• 1 cup cider vinegar
• 1/2 cup freshly grated horseradish root or prepared white horseradish
• 2 teaspoons kosher salt
• 2 teaspoons freshly ground black pepper
• 1 teaspoon finely grated lemon zest