Limoncello is a vibrantly colored digestif that goes down easy on a hot summer’s day. Although the sweet liqueur is most often served, chilled, in a shot glass, it is meant to be sipped slowly after your meal.

And although easy to make, limoncello has a complicated — and contested — history. Some people believe that Italian monks first made the spirit as early as the Middle Ages; others credit Southern Italian fishermen who were thought to drink it upon returning to shore to warm themselves and fight off colds.