This Presto 01362 6-Quart Stainless Steel Pressure cooker is a great starter into the art of Pressure cooking, 6-Quarts is just the right size for almost any one who cooks on a regular basis. You will use 4 Quarts (1 gallon) for cooking and the remaining space is for pressure expansion. An Aluminium insert is included that keeps the cooking items above the bottom of the pot.