It numbs your tongue and lips on contact, is drunk from a shared coconut-shell cup, and is downed in one go after a synchronized clap.
Kava, called yaqona in Fiji and casually 'grog,' is made by pounding dried kava root into powder, mixing it with water, and straining it through cloth into a large wooden bowl (tanoa). It's ladled into a coconut-shell cup and shared in a set order at village ceremonies, and just as often at casual evening gatherings among friends.