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When canning, use recipes and procedures from
reputable sources. Reliable recipes and
procedures are available from the manufacturer
of your canner; manufacturers of glass jars for
canning, such as Ball and Kerr brand; and the
United States Department of Agriculture
Extension Service.
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Remember that canning is a process that
generates large amounts of steam. To avoid
burns from steam or heat, be careful when
canning.
CAUTION
Safe canning requires that harmful micro organisms
are destroyed and that the jars are sealed
completely. When canning foods in a water-bath
canner, a gentle but steady boil must be maintained
for the required time. When canning foods in a
pressure canner, the pressure must be maintained
for the required time.
After you have adjusted the controls, it is very
important to make sure the prescribed boil or
pressure levels are maintained for the required time.
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Since you must make sure to process the canning
jars for the prescribed time, with no interruption in
processing time, do not can on any cooktop surface
unit if your canner is not flat.
Special pans
Special pans, such as griddles, roasters, pressure
cookers, woks, water (Use only a flat-bottom wok).
CAUTION
Food packaged in aluminum foil should not be placed
directly on the glass ceramic surface for cooking;
aluminum foil can melt and cause permanent
damage.
CAUTION
Plastic, paper, and cloth can melt or burn when in
contact with a hot surface. Do not let these items
come in contact with the hot glass.