Aufguss (sauna infusion)

The heart ritual of the sauna

The Aufguss is the ceremonial high point of a sauna session: water — often with essential oils — is poured onto the hot stones of the stove, the rising steam abruptly increases the perceived heat, and the sauna master distributes the wave of heat through the room with a towel. The Finns call this burst of steam “löyly” and mean by it more than physics: the spirit of the sauna itself.

How an Aufguss works

A classic show Aufguss lasts 8 to 12 minutes and follows a dramaturgy: an announcement of the theme and the scent, several infusion rounds of rising intensity, and between them the towel technique — from gentle fanning to the towel helicopter that drives the heat onto the benches. Afterwards: out, cool down, rest. In many houses an infusion schedule with fixed times and changing scents belongs to the sauna day.

The etiquette

Its own rules apply to the Aufguss: come in time — during the ritual the door is not opened, and every opening lets the löyly escape —, follow the instructions of the sauna master, and whoever can no longer bear the heat leaves quietly between the rounds, not in the middle of one. Beginners sit on the lower benches and take a place near the door.

The Aufguss in a spa hotel

From the classic Finnish infusion at the Landromantik Hotel Oswald to event formats with ice, fruit or sound — infusion culture has become a discipline of its own, including championships for sauna masters. For the spa day that means: study the infusion schedule, take in one classic and one themed Aufguss — and build the rest of the day around these fixed points.

Frequently asked questions

Why does the Aufguss feel so much hotter?

Because the steam suspends the evaporative cooling of the skin: the abruptly raised humidity prevents sweat from evaporating and cooling you — the heat arrives unchecked. The air temperature barely rises; the sensation all the more.

May I leave the sauna during the Aufguss?

If you must: yes, always — your own condition comes before any etiquette. The polite way is to leave quietly between the infusion rounds; whoever notices the heat tipping over, though, goes immediately and without a bad conscience.

What does “löyly” mean?

The Finnish word for the burst of steam of the infusion — and in a wider sense for the soul of the sauna. Good löyly is soft and enveloping rather than stinging; experienced sauna masters steer it through the amount of water, the scent and the towel technique.

Are scented infusions better than pure ones?

A matter of taste: the pure infusion shows the löyly most clearly, while essential oils — from birch to citrus — give the ritual a theme and an atmosphere. All that matters is the quality and dosage of the oils; good houses work sparingly and with pure natural essences.

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