Mmmm of course, the Golden Fleece elixir. Finally, I can rest in peace. Thou should order some Golden Fleece as well, for thy debt has been repaid.
Hint 1
Death said you should order the elixir.
Hint 2
There is a bar... should you talk to them?
Hint 3
No, really, go talk to the staff at the bar and ask to order The Golden Fleece.
Hint 4 (Solution)
Once you order The Golden Fleece at the bar, they will give you the "Temperance" card. Drink in moderation!