Example: Yesterday I bought some Salsa which contains tomatoes, how does a jar of tomatoes stay fresh and safe to eat for months in store shelves where actual tomatoes only last a week or two?
In: Chemistry
Stuff rotting or going bad is usually bacteria or other things eating the food.
Jarred stuff isn’t just jar.
It’s basically purified by boiling, acid, or combination.
Essentially 0 living things are in the jar. Therefore, no decay. So it stays fresh basically until opened.
Now I can’t say for sure if it would last forever but jarring is a long term food solution similar to canning.
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