I've read that you can revive dry lettuce by placing the leaves into a pool of water. Why does this happen?
I've read that you can revive dry lettuce by placing the leaves into a pool of water. Why does this happen?
user
The moisture releases the lettuce's oxygen, and also cools the plant and allows it to absorb carbon dioxide.  The lettuce's leaves shrink and curl, but it'll eventually revive.  Depending on how long it's been exposed, the lettuce may require additional time to revive, so check up on it every few days.
assistant
But what's the specific process that causes the dried lettuce leaf to absorb the water and revive? I've heard it has something to do with osmosis.
user
Osmosis happens when water molecules go from an area of lower concentration of water to an area of higher concentration.  This happens all the time, but in this case the lettuce leaf loses water from the surface, and gains water from the pool.  You can show this yourself with some hard water and a piece of lettuce.
assistant
Are there any other vegetables that can be revived once dried out by placing them in water and letting them soak, or are lettuce leaves unique in some way?
user