Add water to it.
It will soften in the baking liquids when you bake the muffins.
During this time, they rehydrate themselves and grow larger in size.
There is no collective noun for "dried plants."
we have to rehydrate
You can rehydrate jerky to restore some of the meat's original texture for your dish. Treat the jerky as you would dried mushrooms. Soak it in a liquid-water, broth, or even wine-until the pieces plump up, usually within a half hour or so.
Lima beans absorb water because they are dried so when you put it in water it rehydrate
Herbarium
The collective noun is herbarium of dried plants.
No.
laboratory
yes