Centurii-chan - Kykeon was an Ancient Greek drink made mainly of water, barley and naturally "occurring substances"

Nope, I just checked it now and it turns out the other ingredients are either:

1. Honey

2. Grated Goat Cheese

3. Pennyroyal (A type of Mint)

4. Wine

Apparently it was mainly a drink for the peasants who wanted to get shit-faced on the cheap.

I dead ass thought it was gonna be C U M