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Ideally, jam will be heat sealed into an air-tight container. This means that bacteria will lack the air it needs to reproduce, and it will be in an unfavorable Ph range due to the massive levels of sugar involved. Also, the fact that the jam was heated, very hot for a long period of time, would have killed any existing bacteria. The only bacteria that would be present would have been introduced between the time that the jam was cooled to below 65 degrees centigrade (about 150 Fahrenheit), and the time it was placed into the jar.
So assuming that the jam was jarred properly, this food will be safe to eat and although it may possibly taste unpleasant (and it probably won't), it won't present a health risk.
Answer:Jam can last for years in the right conditions. If home-made, sterilising the jars is very important, so make sure you sterilise everything really well. You need to put grease-proof paper on top of the jam before you put on the lids… directly onto the top surface to prevent any mold forming. The sugar is a preservative!My Nan used to make jam and chutney for all of us every year. It was never stored in a fridge, just in a cool, dark place. It can be stored for up to 2 years or even more if the sterilizing process and storage is good. Just boil the jars, make the jam, then heat the jars up again and pour the hot jam into the hot jars, lid them and wait till they pop. We haven't had any problems with this way.
Answer:I am currently eating apple jelly which is over ten years old, and is still good. That should give you some idea. I've had strawberry and raspberry jam last five years easily.
What else can I help you with?
How long does unopened antifreeze last?
It was last for decades if unopened.
How long does a bottle of scotch last unopened?
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How long does a store bought precooked ham last in the fridge?
A store-bought precooked ham can typically last in the refrigerator for about 3 to 5 days after opening. If the ham is unopened, it can last until the "use by" date indicated on the packaging, which is usually several weeks. Always ensure it is stored in an airtight container or wrapped tightly to maintain freshness. If you're unsure, it's best to check for any signs of spoilage before consuming.
How long will unopened Cheerios's last?
3 years.
How long Will unopened Pepsi last?
1 year
How long does kirsch last unopened?
About three years.
How long do CO2 cartridges last unopened?
Unopened CO2 cartridges can last indefinitely if stored properly in a cool, dry place.
How long does store bought salsa con queso last in a jar unopened?
Unopened store-bought salsa con queso typically lasts for about 1 to 2 years past the printed expiration date when stored in a cool, dry place. However, it's essential to check the label for specific storage instructions and best-by dates. Once opened, it should be refrigerated and consumed within a week or two for the best quality. Always inspect for any signs of spoilage before consumption.
How long does Malibu keep unopened?
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How long does unopened potting soil last before it expires?
Unopened potting soil can last indefinitely if stored properly in a cool, dry place.
How long does unopened Pinot Grigio last before it goes bad?
Unopened Pinot Grigio can last for about 1-2 years before it goes bad.
How long does unopened sour cream last?
Unopened sour cream can last for about 1-2 weeks past the expiration date if stored properly in the refrigerator.
