Staying Hydrated
Deep dive documentation for The Nether...? systems.
Unlike the Nether, water will not instantly evaporate when you are in the Beneath. However, there is also the option of crafting a Juicer.
The juicer is a drinking vessel that allows the compression of Mushrooms and Fruit into water. The single-slot user interface automatically processes inserted mushrooms into water.
These mushrooms spawn all over the Beneath. Fresh fruits (such as Glow Berries) may also be squeezed into water.
You can also find water and Hot Springs in the upper areas of the Beneath.