It involves you teaming up into pairs competing for the best drink mix, whether it be the tastiest or the strongest.
The drink is mixed in secret then poured out for the judges, everyone rotates and at the end the best drink wins and everyone is a bit drunk, so everyone wins.
Catherine: I'm down!
Diego: yea im game, even though I cheat with catherine!
Claudio: whatever... I'll drink to that
Sammy: ok, lets play! me and catherine are team 1