Rotisserie Turkey

Ingredients

• 1 (10- to 12-pound) turkey fresh or defrosted
• 1 lemon, cut in half
• Kosher salt to taste Freshly ground black pepper, to taste
• 1 tablespoon orange zest
• 1 tablespoon minced garlic
• 3 tablespoons unsalted butter frozen and cut into small pieces 3 tablespoons unsalted butter, softened
• 1 onion, coarsely chopped
• 1/3 cup fresh orange juice Chicken or turkey stock
• 1/4 cup flour