Before wrapping up the holidays, there is one final occasion the French take to eat and rejoice: the Fête des Rois, or “Feast of the Kings.” Held on Jan. 6, the 12th day of Christmas, this celebration involves eating a galette des rois, or king cake—two circles of buttery puff pastry filled with sweet, creamy frangipane—in which a trinket, called a fève, has been hidden. If your slice has the fève, you are crowned honorary king (or queen) for the day. Traces of celebrating the Fête des Rois date back to the 14th century in France. The holiday celebrates the Epiphany, a Christian feast day commemorating the arrival of the Three Wise Men—or Three Kings, “les rois”—visiting Jesus after his birth. Some would argue that the galette des rois tradition can be traced to even earlier, back to ancient Rome and the Saturnalia celebration, a festival held in honor of …