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Pressure Canning In Your Presto
Pressure Canner
YourPressureCannerisaspecial,largecapacitypressurepandesignedforhomecanningawidevarietyoffruits,vegetables,meats,
poultry, and seafood.
TheCannerusespressuretoachievethehightemperaturesrequiredforsafelyprocessingfoodswhilecanning.TheUnitedStatesDepart-
mentofAgriculture,Washington,D.C.,recommendsthePressureCannerastheonlysafemethodforcanninglow-acidfoods—vegetables,
meats, poultry, and seafood.
Waterboilsat212°F(exceptinmountainousregions)andthistemperatureissufcienttoarrestordestroysomespoilageorganisms—
enzymes,molds,andyeast.However,atemperatureof240°Foraboveisneededtodestroyharmfulbacteria,especiallyClostridium
botulinum.
Inpressurecanning,someofthewaterintheCannerisconvertedintosteam.Afterallairisexhaustedthroughtheventpipeandautomatic
airventinthecover,thepressureregulatorisplacedontheventpipe.Expandingsteamraisestheautomaticairventandthencreates
pressurewithintheCanner.Asthepressureincreases,thetemperatureincreases:5poundspressure–228°F;10poundspressure–240°F;
15poundspressure–250°F.
As a safeguard against using canned foods which may be affected with spoilage that is not readily detected, it is necessary to boil all
low-acidfoods(allmeats,poultry,seafood,andvegetables)todetectanyodorsorfoamingfromspoilage.Ifthefooddoesnotsmellor
look right, discard it without tasting. Many times odors that cannot be detected in the cold product will become evident while heating.
To detect spoilage at altitudes below 1,000 feet, boil foods for 10 minutes. At altitudes above 1,000 feet, add an additional minute of
boiling time for each additional 1,000 feet.
ItisnecessarytofollowafewspecialrulesinusingandcaringforyourPressureCanner.Becomefamiliarwiththevariouspartsas
showninthediagramsandreadthe“HowtoUse”sectionbeforeusingforthersttime.UseonlygenuinePresto
replacement parts.
PressureDial
Gauge
PressureDial
Gauge
Canning
Rack
Vent
Pipe
Body
Handle
Cover
Handle
Automatic
Air Vent
Pressure
Regulator
Body
Handle
Cover
Handle
Canning
Rack
Vent
Pipe
Body
Handle
Cover
Handle
Automatic
Air Vent
Pressure
Regulator
Body
Handle
Cover
Handle