Natural and Low-Intervention Winemaking

The natural wine movement traces its intellectual roots to Jules Chauvet, a Beaujolais negociant and trained chemist who spent decades researching carbonic maceration and the role of sulfur dioxide in winemaking. Chauvet demonstrated that careful cellar hygiene, low temperatures, and indigenous yeast fermentation could produce stable wines without SO2 additions. His ideas influenced a generation of Beaujolais winemakers, most notably Marcel Lapierre in Morgon, who began producing no-sulfur wines in the early 1980s. In the Jura, Pierre Overnoy at his tiny domaine in Pupillin pursued a similar path, making wines without sulfur or filtration that have become legendary among natural wine enthusiasts. By the 2000s, the movement had spread well beyond France, with key proponents emerging in Italy (Frank Cornelissen on Etna, Giusto Occhipinti in Sicily), Spain (Escoda-Sanahuja, Envinate), Georgia (reviving qvevri traditions), and across the New World.

• Jules Chauvet (1907 to 1989): Beaujolais chemist and negociant who proved wines could be made without SO2 through rigorous cellar hygiene and temperature control
• Marcel Lapierre (Morgon, Beaujolais): began commercial no-sulfur production in the early 1980s, now considered the founding father of modern natural wine
• Pierre Overnoy (Pupillin, Jura): cult producer of no-sulfur, unfiltered wines from Savagnin and Poulsard that sell out instantly
• The movement expanded globally in the 2000s with key figures in Italy, Spain, Georgia, South Africa, and Australia

The absence of a single legal definition has been both natural wine's greatest strength and weakness. At its broadest, the term implies organic or biodynamic farming, indigenous yeast fermentation, minimal or no SO2, no commercial additives (such as tartaric acid, sugar, or mega purple), no fining or filtration, and no technological manipulation (such as reverse osmosis or spinning cone). France took a significant step in 2020 with the 'Vin Methode Nature' certification, which requires certified organic grapes, indigenous yeast, no additives during vinification, and either zero sulfites (for the strictest label) or less than 30 mg/L total SO2 at bottling. Italy's VinNatur association requires member wines to contain less than 50 mg/L total SO2 for reds and 60 mg/L for whites. However, many producers reject formal certification, arguing that the spirit of natural winemaking resists bureaucratic codification.

• Vin Methode Nature (France, 2020): certified organic grapes, indigenous yeast, no additives, max 30 mg/L total SO2 (or zero for strictest tier)
• VinNatur (Italy): member association requiring max 50 mg/L SO2 for reds, 60 mg/L for whites, organic farming, no commercial yeast
• Conventional limits: EU allows up to 150 mg/L total SO2 for dry reds and 200 mg/L for dry whites; natural wine targets under 30 mg/L or zero
• Many producers reject formal certification, viewing natural winemaking as a philosophy rather than a checklist

In the cellar, natural winemakers prioritize non-intervention. Grapes are typically hand-harvested and either destemmed gently or fermented as whole clusters (carbonic or semi-carbonic maceration is common in Beaujolais-influenced styles). Fermentation relies entirely on indigenous yeasts present on grape skins and in the cellar environment, which means fermentations often start more slowly and can take weeks or months to complete. Temperature control may be minimal, relying on cellar ambient rather than refrigeration. Sulfur dioxide, if used at all, is added only in very small amounts at bottling to provide minimal protection during transport and storage. Most natural winemakers avoid fining agents (bentonite, egg white, casein, isinglass) and filtration, resulting in wines that may appear cloudy or hazy. Aging vessels vary widely, from old neutral oak barrels to concrete, fiberglass, stainless steel, amphora, and qvevri.

• Indigenous yeast fermentation: relies on wild microflora, often starting with non-Saccharomyces species before S. cerevisiae dominates
• Whole cluster and carbonic maceration are common, especially in Beaujolais-influenced natural wine styles
• Sulfur dioxide limited to tiny amounts at bottling (if any); many producers make entirely SO2-free wines
• No fining or filtration: wines may appear hazy or cloudy, with visible sediment considered a feature rather than a flaw

Natural wine provokes strong opinions on both sides. Critics, including many traditionally trained winemakers and sommeliers, argue that insufficient sulfur protection leads to wines that are unstable, oxidized, or contaminated by spoilage organisms. Mouse taint, a particularly controversial flaw caused by specific lactic acid bacteria or Brettanomyces strains and perceived as a lingering, unpleasant taste, is more common in low-sulfur wines and has no effective treatment once present. Volatile acidity (excess acetic acid, perceived as vinegar) is another risk in wines fermented without SO2 protection. Quality variation is wider than in conventional winemaking: the same producer's wines can be brilliant in one vintage and flawed in the next. Supporters counter that conventional wines are equally capable of being bland and manipulated, and that the occasional flaw is a worthwhile trade-off for wines of greater character, complexity, and sense of place.

• Mouse taint: a persistent, metallic aftertaste caused by specific lactic acid bacteria or Brettanomyces; more common in low-sulfur wines with no known cure
• Volatile acidity risk: lack of SO2 protection allows acetic acid bacteria to produce vinegar-like notes, especially during warm fermentations
• Quality variation: natural winemaking amplifies vintage differences and cellar conditions, producing wider batch-to-batch inconsistency
• Supporters argue that the focus on flaws ignores the many well-made natural wines that express terroir with unusual clarity and energy

From its French origins, natural wine has become a global movement with a distinctive culture. Dedicated natural wine bars have proliferated in cities from Paris and London to Tokyo, New York, and Melbourne. Specialized importers like Kermit Lynch, Jenny and Francois Selections, and Zev Rovine curate portfolios focused on artisanal, low-intervention producers. Wine fairs like RAW (founded 2012 by Isabelle Legeron MW), Les Affranchis in Paris, and VinNatur in Italy have become annual gathering points for producers and enthusiasts. Georgia's ancient qvevri winemaking tradition, which buries clay vessels underground for extended skin-contact fermentation, has been embraced by the natural wine world as a philosophical ancestor. In the New World, Australia's Adelaide Hills and South Australia's McLaren Vale have become hotspots for natural wine production, with producers like Jauma, Lucy Margaux, and Commune of Buttons gaining cult followings.

• RAW Wine fair (founded 2012 by Isabelle Legeron MW): world's largest natural and organic wine event, held in London, Berlin, Los Angeles, and New York
• Natural wine bars have proliferated globally, creating a distinct retail and hospitality culture around low-intervention wines
• Georgian qvevri tradition embraced as a philosophical ancestor: ancient clay vessel fermentation with extended skin contact, now UNESCO-listed
• Australia's Adelaide Hills and McLaren Vale have emerged as New World natural wine hotspots alongside pockets in California, Oregon, and South Africa