How about beer?
Jason wins the prize!
Well, there isn't really a prize other than
the satisfaction of knowing that you were the
first to figure it out. Jolly good.
across it while looking for some other chemical
information. It was the Molecule of the Week on
"Beer flavor is a complex balance of
sweetness from sugars and bitter from the
humulones in hops (Humulus lupulus) flowers.
When wort (unfermented beer) is boiled, humulone
molecules rearrange to form the more soluble
isohumulones (one example shown here).
Isohumulones retard bacterial growth and
contribute to beer's bitter flavor."
- Kirt Blattenberger