How and Why to Swirl Wine

We’ve all seen how wine experts spend a seemingly long time swirling their wines; spinning their wrists like low-key plate spinners, or extravagantly gyrating their hands in fairly ridiculous flourishes. But what exactly are they doing, and is it necessary to do this yourself? The answer, of course, lies somewhere between yes and no. Swirling your wine is an important stage of the tasting process, and should take…