PRESTO 01755 16 Quart Aluminum Pressure Canner Cooker 01755 Pressure Canners also double as water bath canners* for preserving fruits, jams, jellies, pickles and salsas Pressure canning is the only method recommended safe by the U.S.D.A. for low-acid foods such as vegetables, meats and fish The easy-to-read gauge automatically registers a complete range of processing pressures Air vent/cover lock allows pressure to build up only when the cover is closed properly and prevents the cover from opening until pressure is safely reduced