Refrigerate after opening, but not before?

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Had a conversation with my wife today about the unopened mayo we had sitting in the pantry and it made me think – how does it make sense for a food (for instance mayo) to sit in a 65-70 degree pantry for months and be perfectly fine, but as soon as it’s opened it needs to be refrigerated. In my mind, if something needs to be refrigerated at any point, wouldn’t it always need to be refrigerated? The seal on the unopened product keeps the item safe, and the refrigerator does that when the seal is off? How do those two things relate?

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Anonymous 0 Comments

The factory that produced it did so in some kind of clean room with a flow hood to reduce the amount of spores that can contaminate it. Its kinda like canning but by making the food clean before adding it instead of doing it in the can

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