Apparently, the US government tested the effects of nuclear explosions on the quality of beer back in 1955:
Examination made immediately upon recovery showed no observable gross changes in the appearance of the beverages. Immediate taste tests indicated that the beverages, both beer and soft drinks, were still of commercial quality, although there was evidence of a slight flavor change in some of the products exposed at 1270 ft from GZ [Ground Zero]. Those farther away showed no change.
No word on long-term effects of the test on those who drank the radioactive beer. In case you were wondering, bottles survived the blast better than cans. Read it all here.