I don’t know what kind of conversation I’ve walked in on when I stop by Twin Valley Distillers in Rockville, MD on a Sunday afternoon, but it sure is lively. The culprit, I will later learn, is owner/distiller Edgardo Zuniga. Edgardo fashions himself an expert on a number of topics: distilling, Maryland history, snazzy tropical shirts. But if you really want to see him get riled up, ask him the difference between two random Caribbean cultures. That’s what he and a group of black folks are heatedly discussing at the bar, when I walk in.