Plural: sky water
This is pure condensed moisture gathered from the inside of a cloud. You can tell it tastes like the sky because it looks like rain. And that's Good.
Autosell value: 80
You drink the sky water. It's cool and soothing and crisp. You can taste its pure flavorlessness on your tongue. Weird. You gain 15-25 PP.
Using multiple: Same as single use