This container is required to brew beer and rum. It has to be placed onto a Scaffold and then have Water Cells, Hops and Wheat placed inside, or have Reeds inserted for Rum. This can be done holding them in your hand and right-clicking the barrel.
Fermentation will then begin and the outcome will depend on the ratio of the ingredients and how long they've been in there. It can ferment for up to 24 hours (real time).
Drinking beer gives you various benefits including increased movement and mining speed.
Drinking Rum that has been properly fermented (a pretty long time) will give you good effects, such as Resistance and Fire Resistance. Drinking unfermented Rum (spawning it in, for example) will give you negative effects, such as nausea, poison, blindness, and instant damage.
- For more information, see this forum thread .