Small Potatoes: 12 minutes (2-3 inches in diameter/5-7 ounces) Medium Potatoes:16 minutes (3-4 inches in diameter/8-10 ounces) Large Potatoes: 22 minutes (4-4.5 inches in diameter/11-13 ounces Extra Large Potatoes: 26 minutes (5 inches in diameter/15-16 ounces)