Cucumber
Water you chew. Hydration is part of this page, and this is the cheapest form of it.
How to use it
Raw, with anything. In water with mint, through a salad, as a slice against a plate that is too hot.
The best version
Firm end to end, with no soft spot. The small varieties taste of more than the long smooth ones.
How to prepare it
Leave the skin on, because that is where most of what is in it sits. Kept out of the fridge it stays firm longer than it does in the cold.
What it does
Cucumber has not been studied in people as a food on its own. It is here because drinking enough is easier when it tastes of something, and because it fills a plate without adding anything.
Watch out
The cucumber has nothing to hide and nothing to promise. Everything sold about detoxing and bloating is marketing rather than research.