Have you ever sat down to enjoy your favorite beer and wondered, “Why does this taste like bananas?” Two words: Isoamyl acetate. This organic compound produces a distinctive banana-like flavor or aroma in beer. Most beer contains isoamyl acetate, but in high concentrations, the banana flavor in beer can be overpowering and disrupt the taste of your finished product. Let’s take a look at the role isoamyl acetate plays in the beer brewing process and how you can control the levels of this compound to produce a more subtle flavor.