Natural Wine: What It Is and How It Differs

Natural wine sits at the intersection of agriculture, philosophy, and fierce debate. This page explains what distinguishes natural wine from conventional and organic production, how the winemaking process actually differs at each stage, and where the boundaries — and the arguments — tend to fall. Because "natural" carries no legal definition under US federal law, understanding the underlying mechanics matters more than any label claim.

Definition and scope

Walk into a natural wine bar in Portland or Brooklyn and ask the sommelier to define natural wine. The answer will probably run about four minutes and include at least one strongly held opinion. That's not an accident — the term has no regulatory standing in the United States, and no certifying body with binding authority over its use (TTB wine labeling regulations govern what appears on American bottles, but "natural" is not among the controlled terms).

The working definition used by most producers and advocates, including the organization RAW WINE, centers on two principles: organically or biodynamically farmed fruit, and minimal intervention in the cellar. The La Renaissance des Appellations grower network, which includes producers across France, Italy, and Austria, applies similar criteria. The practical floor for most credible producers is no synthetic pesticides or herbicides in the vineyard, and no additions during fermentation beyond, at most, minimal sulfites at bottling.

To put a number on it: many natural wine advocates cap added sulfur dioxide at 30 to 40 milligrams per liter total, compared to the TTB's legal maximum of 350 parts per million for table wine in the US — a ceiling more than eight times higher.

How it works

The mechanics of natural winemaking diverge from conventional practice at three distinct points.

  1. Vineyard management. No synthetic fertilizers, herbicides, or pesticides. Many producers pursue organic certification (USDA National Organic Program) or biodynamic certification through Demeter; others simply farm without paperwork. Cover crops, composting, and manual canopy management replace chemical inputs. This is the least contested part of natural wine — most definitions require it absolutely.

  2. Fermentation. Conventional winemaking typically inoculates juice with commercially selected yeast strains chosen for predictable, fast, temperature-controlled fermentation. Natural producers rely on ambient yeasts — the microorganisms living on grape skins and in the cellar environment — to drive fermentation spontaneously. This is slower, less predictable, and responsible for much of the aromatic distinctiveness (and occasional instability) in natural wines. For a deeper look at how fermentation mechanics shape the finished wine, the wine fermentation process page covers the biochemistry in detail.

  3. Cellar additions. Conventional winemaking permits dozens of approved additives and processing aids under TTB and OIV guidelines, including tartaric acid, tannin powders, color concentrators, and fining agents such as egg whites or isinglass. Natural wine production strips this list close to zero. Filtration and fining are either avoided or done very lightly, which is why natural wines often appear slightly hazy and why they evolve faster in bottle.

The relationship between organic farming and natural wine is worth unpacking. All natural wine is farmed organically in practice, but not all organic and biodynamic winemaking produces natural wine. A certified organic California Cabernet can still be inoculated with commercial yeast, acidified, filtered, and bottled with 200 milligrams per liter of sulfites — none of which would pass muster in the natural wine community.

Common scenarios

Natural wine shows up in distinct contexts, each with its own logic.

The most straightforward scenario is the small-production estate where the same family farms the vineyard and makes the wine. Georges Laval in Champagne and Dard & Ribo in Crozes-Hermitage are frequently cited examples — producers with full control from vine to bottle and reputations built over decades without certification bureaucracy.

A second scenario involves importers like Zev Rovine Selections or Jenny & François Selections, which function as de facto quality filters for the US market, curating portfolios from producers who meet informal natural wine criteria. These importers fill the gap left by the absence of any statutory definition.

A third scenario — and the one that generates the most skepticism — is the large commercial producer using "natural" as a marketing term without meaningful commitment to the underlying principles. Because the TTB does not regulate the word, it can appear on a label without any corresponding change in winemaking practice. Checking the importer, the farming certification, and the sulfite disclosure (required on any US label above 10 parts per million) provides more information than the word "natural" alone.

Decision boundaries

The sharpest line in natural wine is sulfites — specifically, whether any added sulfur dioxide is acceptable. A strict reading says no: some producers bottle with zero added sulfites, relying entirely on the wine's natural chemistry for stability. A more pragmatic camp permits small additions at bottling, typically under 40 milligrams per liter, to ensure the wine survives shipping and cellar storage without turning.

A secondary boundary is filtration. Wines bottled without filtration carry more sediment and continue to evolve — sometimes in interesting directions, sometimes toward faults like volatile acidity or Brettanomyces. Understanding wine faults and defects is genuinely useful when navigating natural wine, because the line between character and flaw is frequently negotiated rather than fixed.

The broader landscape of wine styles — where natural wine sits relative to conventional, organic, and biodynamic production — is mapped in the key dimensions and scopes of wine reference. For anyone building a frame of reference from the beginning, the New Zealand Wine Authority home provides orientation across all the site's major topic areas.

References

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