This Presto 16-quart pressure canner is designed for easy confident home pressure canning. The only safe method recommended by the U.S. Department of Agriculture for canning vegetables meats poultry and seafood. Doubles as a boiling water canner for preserving fruits jams jellies pickles and salsa in half-pint and pint jars. Works on gas electric and smooth-top ranges. The adjustable regulator automatically maintains 5- 10- or 15-pounds pressure. Special air vent/cover lock allows pressure to build only when the cover is closed properly and prevents the cover from being opened until pressure is safely reduced. It also gives a visual indication of pressure inside the canner. Handy to use as a large capacity pressure cooker for preparing meats poultry soups and desserts. Made of durable heavy-gauge aluminum for long life and fast even heating. Includes a cooking/canning rack and an easy-to-follow 76-page instruction/recipe book for canning and pressure cooking. Regular Mason Jar Capacity: 13 half-pints 10 pints or 7 quarts (Half-pints and pints only for boiling water processing). Extended 12-year limited warranty.