Bring 12 of Zanzil's Mixture to Crank Fizzlebub in Booty Bay.
So you want some Fool's Stout, eh? Thinking of heading back to the races...?
All right, bring me more of Zanzil's mixture and I'll make some more stout for you.
You will receive:
Do you have those Zanzil mixtures yet, <name>?
Ah, very good! Here is your pay.
And here is a little something extra... for your discretion.