The Presto 23 Qt. Pressure Canner and Cooker is designed for easy, confident home pressure canning. Not only is pressure canning easy, but it's also the only safe method recommended by the USDA for low-acidic foods such as vegetables, meats, and fish. With this full-service canner, you can do it all. It doubles as a boiling water canner for preserving fruits, jams, jellies, pickles, and salsa in half-pint, pint, and quart jars. It can be used on both gas and electric smooth-top ranges. The easy-to-read gauge automatically registers a complete range of processing pressures, which is especially helpful if you live in a high-altitude area. You can start canning worry-free with the special air vent/cover lock. This 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, so you always know what's going on. Not only is this pressure canner versatile, it's durable too. It's made of heavy-gauge aluminum for long life and fast, even heating. It comes with a cooking/canning rack and an 80-page easy-to-follow instruction/recipe book for canning and pressure cooking.