Who and from where are you Dionysus?
Since by the true Bacchus,
I do not recognize you; I know only the son of Zeus.
While he smells like nectar, you smell like a goat.
Can it be then that the Celts because of lack of grapes
Made you from cereals? Therefore one should call you
Demetrius, not Dionysus, rather wheat born and Bromus,
Not Bromius.

As quoted in The Barbarian's Beverage: A History of Beer in Ancient Europe (2005) by Max Nelson, p. 28. In this epigram, Julian mocked the beer of the Germans and Celts as disgusting in comparison with wine.