The Rise of Natural Wine in Germany: Notes from a Saar Cellar

Ferment & Cellar · Ayl on the Saar · the week after St. Martin

By late November the Saar valley has gone quiet in the way only a wine region can. Harvest finished, leaves down, the river full and gray-green under a sky that is not offering anything. In Ayl, below the castle rock on the left bank, the cellar of Weingut Peter Lauer smells of wet slate, old oak, and carbon dioxide — the faint prickling smell of a fermentation still at work, closer to a bakery before dawn than to a chemistry lesson. The wine sits in Fuder, the thousand-liter casks that a generation ago were nearly all sold off for garden planters, and nobody is hurrying it. Nobody is adding much of anything.

This is the unglamorous, cellar-dark end of what the trade now calls natural wine — a term with no legal standing and a thousand private definitions. Germany, which spent a century perfecting a different kind of control, has become one of the places where the idea is taken most seriously and where it tastes least like a fashion. What follows is an account of how that happened, what it means in the glass, and how to buy a bottle without buying the folklore. The measurements, where they exist, are included.

What natural wine actually means in Germany

Begin with the negative definition, because it is the only one everyone signs. Natural wine is wine with things left out: no purchased yeast, so fermentation runs on the microbes already on the grapes and in the cellar air; no enzymes, no fining, often no filtration; sulfur dioxide — the antioxidant every cellar in Europe uses — withheld entirely, or added in small doses at bottling.

The European Union has no legal category for any of this. It does set ceilings, and the ceilings tell the story. A conventional dry white may carry up to 200 milligrams of total sulfur per liter. An organic white — organic wine became a defined EU term with the 2012 vintage — is capped at 150. France’s self-governed vin méthode nature specification, the strictest in wide use, allows at most 30. German law has no counterpart to the French spec. What a German bottle offers instead is a set of seals — Demeter and Respekt for biodynamics, Ecovin for organic — plus the grower’s own discipline, which you take on trust.

Trust comes with paperwork here, and with a peculiar paradox. The VDP, the association of roughly two hundred Prädikat estates, classifies its members’ vineyards in a Burgundy-style hierarchy with Grosse Lage at the top — the establishment, in other words. Natural wine sits outside that system by choice. Many of the best German bottlings in the style are legally nothing grander than Landwein, because their makers would rather explain the method than fit the category.

Why German growers came to it slowly, then all at once

Germany spent the twentieth century building a different kind of control. The 1971 wine law arranged the Prädikat ladder — Kabinett, Spätlese, Auslese, upward to Trockenbeerenauslese — around must weight, a single number measured in degrees Oechsle at the press-house door. Precision of that sort leaves little room for a fermentation you cannot predict. Spontaneous fermentation, the signature move of the natural camp, was a risk most estates simply declined.

The turn came in the mid-2000s, and from the top rather than the fringe. Peter Jakob Kühn in the Rheingau began converting his family estate to biodynamics in 2004; Philipp Wittmann in Westhofen and Bürklin-Wolf in Wachenheim followed within a couple of years. On the Mosel, Clemens Busch in Pünderich had been farming without herbicide since the 1980s, mostly without applause. These were estates with names to lose. What they found was that farming without chemicals and fermenting without purchased yeast delivered the one thing the Prädikat system had never measured: site character. A Riesling grown on the blue Devonian slate of the Mosel does not taste like one grown on the Rotliegend red of Nierstein’s Roter Hang, and the less a cellar does, the harder that difference is to miss.

The scale is easy to underestimate from outside. Germany farms a little over 100,000 hectares of vines across thirteen delimited regions, from the Ahr to Sachsen, and Riesling alone covers roughly 23,000 of those hectares — close to half the world’s plantings. Organic and biodynamic cultivation, well under five percent of the area at the turn of the millennium, now sits near a tenth and climbs annually. None of that is natural wine by itself. But a movement needs growers, and Germany turned out to hold a disproportionate number of the disciplined kind.

Two accidents of geography explain why it took root. The first is acidity: cool-climate grapes arrive at the press with total acids that can run seven or eight grams a liter, and low pH is the oldest preservative there is. A spontaneous fermentation in a Saar Riesling is simply less exposed than the same experiment in a warm-zone chardonnay. The second is commercial. German growers were already selling rock — slate, Rotliegend, the volcanic soils of the Kaiserstuhl. When the label’s promise is geology, the cellar’s job is to stay out of the photograph.

The Saar case: one cellar, one cask, no recipe

The Saar is one of the coldest wine valleys in Germany, a Mosel tributary whose Rieslings historically fermented out below ten percent alcohol and whose marginal vintages can fail outright. Cold was long the valley’s problem. In the natural-wine era it is the valley’s insurance: acid holds the wine while the cellar does nothing.

Florian Lauer took over his family’s estate in Ayl in the early 2000s, when feinherb — the old, half-dry register the region drank before dry became a virtue — was considered a confession. He kept the Fuder. A Fuder holds about a thousand liters, and the wood in these is old enough to contribute nothing but inertia, slowing a fermentation the way a slate wall gives back the day’s heat at night. Rest a palm on one in November and it is faintly warm, faintly alive. This is the object at the center of the German natural-wine story: not a gadget but a piece of furniture the cellar grew around.

The estate’s best rows stand in the Kupp, a hill the 1971 law folded into a collective name and that Lauer’s labels have spent two decades arguing back into a single site. The wines ferment with their own yeasts, rest long on their lees, and receive a small sulfur dose at bottling — on some bottlings none. Nothing about that is doctrinaire; it is closer to bookkeeping. What it yields, in a good year, is Riesling that smells of quince and crushed stone and the cold hearth of a cellar, with acid that arrives a week ahead of the fruit. I have not tasted a quieter argument for the style.

What German natural wine tastes like

The honest answer first: it tastes like vintage, more nakedly than anything else on the shelf. The style’s refusal to correct in the cellar means the year reports itself undecorated.

Within that, three broad registers. The first is precise spontaneous Riesling — the German mainstream of the movement — which reads not as funky but as articulate: citrus, orchard fruit, wet stone, sometimes a smoky note the growers attribute to slate and the skeptics to lees. The second is orange wine, white grapes macerated on their skins for days or weeks, which turns a Silvaner amber and gives it the grippy tannin of a light red. The third is pét-nat, bottled mid-fermentation, cloudy, faintly sweet, low in alcohol, and gone by spring.

Then the honest caveat. Whole-bunch rot, brettanomyces, volatile acidity, the mousy finish that appears a minute after swallowing — these are faults, not philosophy, and the serious growers here treat them as such. High acid is unforgiving; it shows everything. That is exactly why the best German bottles in this style are among the cleanest of the movement, a point the louder examples at the fairs sometimes obscure.

Where Germany drinks it now

Demand grew up away from the vines, which is worth noticing. Berlin carries a dense scatter of natural-wine bars, enough that the term has begun to mean less rather than more; the lists worth reading are the ones that argue with their neighbors. The RAW Wine fair, Isabelle Legeron’s traveling market for growers of this school, has run German editions in Berlin, and ProWein in Düsseldorf — the industry’s great March gathering, several thousand exhibitors strong — now sets aside whole aisles for organic and low-intervention estates. Ten years ago that floor space did not exist.

A good share of the bottles travel north rather than west, to Copenhagen and Amsterdam and the Baltic coast, along routes the Hanseatic cities were already using to move Rhenish wine and salted fish in the fourteenth century. The cargo is smaller now — pallets of hand-labeled glass — but the geography has not changed. The north has always been a market German wine had to travel to.

How to buy a bottle without the folklore

My own rules, assembled over a decade of expensive mistakes:

• Read the seals, not the adjectives. Demeter, Respekt, and Ecovin certification is auditable; the word natural is not.
• Do not be put off by Landwein. Many of the style’s best German bottlings are declassified by design; the legal term is the price of the method, not a judgment.
• Buy the vintage, not the house. With no corrections in the cellar, the year shows. In Germany, the cooler vintages give the style’s most convincing wines.
• Expect haze. Unfiltered wine clouds when cold; stand the bottle upright a day and decant if the look bothers you.
• Budget honestly. A serious grower Saar or Mosel Riesling runs 20 to 40 euros at retail. Below 15 you are usually buying the idea of the wine rather than the wine.
• Store it cool and drink the fizz young. Ten to fifteen degrees, dark; skin-contact whites within two or three years; Riesling, famously, can wait.

Serve the Riesling cellar-cool, ten to twelve degrees, in a glass generous enough to get your nose into. The crystal is optional. The old green, bumpy Römer of German tavern tradition was built for wine with this much acid, and a plain tumbler loses little; the hour matters more than the vessel — a question of Sensory Craft we keep returning to.

What to pour with a northern November table

On the eleventh of November the goose comes to the German table — Martinsgans, roasted, with red cabbage and dumplings — and a dry Saar Riesling beside it is one of the old pairings that survives contact with the present. The acid cuts the fat; the slate keeps pace with the cabbage. For the smoked eel and marinated herring of the northern coasts, feinherb is the better register: a gram or two of residual sugar rounds the salt. An amber, skin-contact Silvaner finds its place against aged Gouda, where the tannin and the salt crystals meet halfway.

By now the Federweißer is finished — the young, still-fermenting must that cellar doors sell through October, drunk with onion tart before it finishes itself — and the slower work of the year begins. It is the season this whole subject belongs to, the same patience we keep returning to in Ferment & Cellar, and the same northern table it comes home to; our notes on that table live in Regional Larders.

By the time this is printed, the casks in Ayl will have gone quiet, the wines racked off their lees, the floor swept. The 1971 law measured sugar. The natural camp measures restraint. What reaches the glass is the same thing it always was — slate, rain, one year’s weather — reported a little more honestly than the label used to allow.

Frequently asked questions about natural wine in Germany

Is natural wine legally defined in Germany?

No. EU wine law recognizes organic wine — regulated since the 2012 vintage, with a sulfur ceiling of 150 milligrams per liter for dry whites — but natural is not a legal category anywhere in the Union. German bottles in the style carry ordinary designations such as Landwein or Qualitätswein. The auditable proxies are the Demeter, Respekt, and Ecovin seals.

Is cloudy natural wine faulty?

Usually not. Cloudiness is typically yeast and grape protein left in by a deliberate choice not to filter or fine. Stand the bottle upright for a day and decant if the appearance troubles you. Genuine faults announce themselves by smell: a stable note (brettanomyces), nail-polish sharpness (volatile acidity), or the mouse-like finish that appears a minute after swallowing.

Do the sulfites cause headaches?

The evidence is thin. A conventional dry white may legally contain up to 200 milligrams of sulfur per liter; sulfited dried apricots may carry on the order of 2,000 milligrams per kilogram, several times more per portion. Alcohol itself, histamines, and simple dehydration remain the more probable explanations.

How long does an open bottle keep?

Two or three days, resealed and refrigerated. Low-sulfur wines fade faster than their labels suggest, so taste before you pour anything out; many improve on the second day as the oxygen does the decanting for you.

Which bottle should a newcomer open first?

A dry or feinherb Saar or Mosel Riesling from a Demeter-certified grower — expect 20 to 40 euros — is the gentlest door into the style, because the acid does the explaining. For the orange-wine experience, a skin-contact Silvaner from Franken is a more temperate introduction than most of what the fashion exports.