Granite Ware Pressure Canner/Cooker/Steamer, 20-Quart USDA recommends pressure canning as the only method for canning meats, poultry and low-acid vegetables Granite Ware Pressure Canner features heavy gauge hard anodized aluminum for strength and will not rust or stain Adjustable 3- piece pressure regulator system calibrated at 5, 10 and 15 psi Also functions as a Waterbath canner and steamer with included racks 20 qt capacity, holds 7 one-quart jars, 8 one-pint jars or 24 half-pint jars