HOME CANNING TIPSCanning should be done on the surface units only.Pots that extend beyond 1 inch of the surface unitare not recommended for most surface cooking.However, when canning with water-bath or pressurecanner, larger-diameter pots may be used. This isbecause boiling water temperatures (even underpressure) are not harmful to the cooktop surfacessurrounding the surface units.HOWEVER, DO NOT USE LARGE DIAMETERCANNERS OR OTHER LARGE DIAMETER POTSFOR FRYING OR BOILING FOODS OTHERTHAN WATER. Most syrup or sauce mixtures—and all types of frying—cook at temperatures muchhigher than boiling water. Such temperatures couldeventually harm the porcelain cooktop surfacessurrounding the electric coil surface units.Observe the Following Points in Canning1. Be sure the canner fits over the center of thesurface unit. lf your range or its location does notallow the canner to be centered on the surface unit,use smaller diameter pots for good canning results.2. For best results, use canners with flat bottoms.On the glass cooktop, flat bottomed canners mustbe used. Canners with flanged or rippled bottoms(often found in enamelware) don’t make goodcontact with the surface unit and take a long timeto boil water.Flat-bottomed canners are recommended forelectric coils; they are required for glass cooktops.3. When canning, use recipes and procedures fromreputable sources. Reliable recipes and proceduresare available from the manufacturer of your canner;manufacturers of glass jars for canning, such asBall and Kerr; and the United States Department ofAgriculture Extension Service.4. Remember that canning is a process that generateslarge amounts of steam. To avoid burns from steamor heat, be careful when canning.NOTE: If your house has low voltage, canning maytake longer than expected, even though directionshave been carefully followed.The process time can be shortened by:(1) using a pressure canner, and(2) starting with HOT tap water for fastest heatingof large quantities of water.Glass Cooktop Cautions:Safe canning requires that harmful microorganisms Since you must make sure to process the canningare destroyed and that the jars are sealed jars for the prescribed time, with no interruptioncompletely. When canning foods in a water-bath in processing time, you cannot can on any ofcanner, a gentle but steady boil must be maintained the cooktop surface units if your canner is notfor the required time. When canning foods in a flat enough.pressure canner, the pressure must be maintainedfor the required time. What is a Temperature Limiter?.4fter you have adjusted the controls, it is veryimportant to make sure the prescribed boil orpressure levels are maintained for the required time.The glass cooktop surface units have temperaturelimiters that prevent the glass cooktop from gettingtoo hot. If the bottom of your canner is not flat,the surface unit can overheat, triggering thetemperature limiters to cycle the unit off for atime. This will stop the boil or reduce the pressurein the canner.Every radiant surface unit has a TemperatureLimiter. The Temperature Limiter protects theglass cooktop from getting too hot.The Temperature Limiter may cycle the units offfor a time if:. The pan boils dry.l The pan bottom is not flat.. The pan is off center.s There is no pan on the unit.10