Why do jams sterilize?

Is it to soften the content or to make it last longer?
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1 Answer

Answer :

With that softening, that's not true. Fruits soften, but vegetables don't. The cucumbers are boiled for about 25 minutes at a temperature of 85 ° C and do not soften. The temperature destroys bacteria and fungi, expelling the air. By cooling, the lid is sucked in and the air with bacteria does not get inside. Therefore, jams will last for many years. At least those that don't "let go" the lid.
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