salt has been used as a preservation tool since at least 2000 BC, when it was used in ancient Egypt to keep food fresh.
Due to salt's preservation abilities, it could make sense why some people like to add a pinch of it to milk to keep it fresh for longer.
Many food safety experts say that it's best to follow expiration dates and practice other methods of keeping milk fresh for longer.
Milk must be stored between 33-38 degrees Fahrenheit in the fridge for safe consumption and to maximize freshness.
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