Known for imparting beer with flavors of artificial butter, diacetyl is one of the more commonly cited off-flavors in beer evaluation. In this episode, contributor Malcolm Frazer joins Marshall to discuss this curious compound in depths including how it's produced and ways to avoid it, as well as things it might be mistaken for when evaluating beer. The results of some exBEERiments on the topic will also be addressed. | Relevant Articles | Diacetyl Off-Flavor xBmt: http://brulosophy.com/2017/01/02/off-flavor-series-pt-2-diacetyl-exbeeriment-results/