Aufguss: the wacky wellness ritual taking over European spas

This one’s tricky to explain, so hear me out. You and several others are in a super-sized sauna. You’re naked. A sauna master, clad in theatrical garms, throws spheres of ice, infused with essential oils, on the rocks. It’s 82.5°C. The steam rises. Said master then wafts the evaporating aromas into your face using a host of acrobatic towel twirls that call on the skills of a nunchucking ninja. There’s music and a light show; there are props and a storyline. But, most importantly,…