Keep Lettuce Crisp
Nobody likes soggy lettuce. If you want to keep your salad crisp, sprinkle some salt on top of the greens. It’ll flavor the salad and preserve your lettuce for a little while. After all, salt has preserved food for years.
Here’s the scientific explanation: Salt draws water out of cells through osmosis. A little bit of salt will draw out enough water to keep your lettuce crunchy. If you add too much, though, it’ll remove too much water from the cells to keep them alive. This is how salt kills certain bacteria.
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