The craft beer variety pack is the world's biggest gamble. You could get introduced to your next favorite IPA. Or, you could get stuck with Old Fezziwig.
Back in the day, we're talking all the way back to the 90s and prior, the case of beer was the definitive unit of measurement for starting a good time.
The International Bitterness Units or IBU is one way to measure how a beer tastes in terms of bitterness. While the bitterness of beer plays a significant role in a flavor profile, it is only one of many factors. Alcohol content, malt and water quality, yeast fermentation byproducts, bacteria, and aeration also affect a particular beer's taste profile.