Partially fermented grape must sold only in autumn, while it is still actively working. Cloudy, sweet and gently fizzing with the carbon dioxide of ongoing fermentation, it is caught at a low, rising alcohol level — typically somewhere between 4% and 11% — and drunk fresh, because it never stops changing. In Germany's wine regions it is a seasonal ritual, sold from barrels at harvest time and paired almost reflexively with savoury onion tart, Zwiebelkuchen.
Federweißer means 'feather white', a nod to the cloudy pale liquid in which yeast cells drift like fine feathers. It is the freshly pressed must of the year's grape harvest, caught mid-fermentation rather than left to finish into wine, and so it appears only for a few weeks in September and October. The drink belongs to Germany's wine country — especially the Mosel, Rhine and Palatinate — where it carries a tangle of regional and dialect names: Neuer Süßer ('new sweet'), Junger Wein, Suser or Sauser, and Najer Woi in the Palatinate dialect; in Austria the equivalent is called Sturm. By long custom it is eaten with Zwiebelkuchen, the bacon-and-onion tart whose richness the tart, fizzy must cuts cleanly.
Hazy and pale — white-grape versions look milky-gold, red-grape ones blush pink — with a soft prickle of natural carbonation on the tongue. It tastes deceptively like sweet grape juice, fruity and grapey, the alcohol barely noticeable behind the sugar, which is exactly the trap: it goes down like soda but is genuinely alcoholic and still fermenting in your glass. There is a faint yeasty, bready note from the live yeast. Served cool in a tumbler, never tightly sealed, and best drunk young — the sweeter and cloudier, the earlier in its life.
This is fermentation caught in the act. Wild or added yeast converts the grape sugar into alcohol and carbon dioxide; the must is bottled and sold once it reaches roughly 4% alcohol, but the yeast keeps working, which is why the alcohol climbs day by day and the drink grows drier and stronger the longer it sits. The escaping CO2 is why containers must never be sealed airtight — a closed bottle can build enough pressure to burst, so Federweißer travels with a loose or vented cap and is carried upright. The live yeast also makes it a genuinely perishable product that cannot be shipped far or kept long, which is why it stays a local, seasonal drink.
Variations
White-grape Federweißer (milky-gold, the most common); red-grape Federroter or Roter Sauser (pink-tinged); the slightly earlier, milkier stage is sweetest while later it turns drier and stronger; regional names abound (Neuer Süßer, Suser, Sauser, Najer Woi); Austrian Sturm is the close cousin; the must can be drunk at the very first cloudy stage as Bremser or Bitzler in some areas; canonically paired with Zwiebelkuchen, and in some regions with chestnuts.
On the Palate
Where Federweißer sits in the German flavor cloud
Ingredients
Serves 4How it's made
5 steps · 15 min
- 130 min
Press freshly harvested grapes to extract the sweet must.
- 210 min
Let the must begin fermenting, with wild yeast or a pitched wine yeast, in a vented vessel.
- 34320 min
Allow fermentation to proceed for a few days until the alcohol reaches roughly 4% and the must turns cloudy and fizzy.
- 415 min
Decant gently into loosely-capped bottles, keeping them upright so the carbon dioxide can escape.
Watch outDecant into loosely-capped bottles kept upright — the yeast is still releasing CO2, and a sealed bottle can build enough pressure to burst.
- 55 min
Serve cool and fresh as soon as possible, ideally alongside warm Zwiebelkuchen.
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