Goyo Garcia Viadero has made natural wine in Ribera del Duero since 2003 on 40 organically farmed hectares (10 ha under his own label). Inspired by Pierre Overnoy of the Jura, all of his wines are fermented exclusively with wild (spontaneous) yeast, de-stemmed, aged only in old barrels, unfined, unfiltered, and made with zero added sulfites. The Clarete, Joven de Vinas Viejas, and single-parcel Finca bottlings are exported by Vine Trail (UK) and Chambers Street Wines (US) to the natural-wine trade.
Address: Ribera del Duero, Valladolid province
Goyo Garcia Viadero's no-additive winemaking philosophy explicitly excludes animal-derived fining agents. All wines are unfined (no egg white, casein, isinglass, or other animal-derived fining) and unfiltered.
Goyo Garcia Viadero is documented by importers and the Vine Trail (UK) as producing wines with zero added sulfites ('sin azufre anadido') across all bottlings.
As of 2026, Finca Torremilanos (Demeter-certified biodynamic) debuted its first certified natural wines at the Salon Gourmets, extending its low-intervention philosophy from organic and biodynamic viticulture to minimal-sulfite, unfined, unfiltered winemaking. The natural range sits alongside the existing Cyclo and Montecastrillo labels. One of only a handful of producers in Ribera del Duero where biodynamic and natural certifications coexist.
Goyo Garcia Viadero's no-additive winemaking philosophy explicitly excludes animal-derived fining agents. All wines are unfined (no egg white, casein, isinglass, or other animal-derived fining) and unfiltered.
Dominio del Aguila's certified-organic winemaking protocol is documented by UK importer Virgin Wines and US importer European Cellars as vegan-friendly: no animal-derived fining agents are used.
Goyo Garcia Viadero is documented by importers and the Vine Trail (UK) as producing wines with zero added sulfites ('sin azufre anadido') across all bottlings.
Finca Torremilanos's natural wine range, debuted at the 2026 Salon Gourmets and produced alongside the Demeter-certified biodynamic portfolio, is made with minimal or no added sulfites, consistent with its natural wine certification status. The estate's Demeter biodynamic certification restricts synthetic inputs throughout viticulture; the natural wine extension applies this logic to the cellar. The specific sulfite addition levels for the natural range are documented in the producer's Gourmets catalogue entry and the estate website.
Founded in 1903, Finca Torremilanos is Ribera del Duero's most prominent Demeter-certified biodynamic estate. The 200-hectare property has held full Demeter certification for biodynamic agriculture since 2014, making it one of the first and largest certified biodynamic vineyards in Castile. The estate produces Tinto Fino-based reds across its Cyclo and Montecastrillo ranges, and in 2026 debuted its first certified natural wines at the Salon Gourmets. Biodynamic practice here encompasses homeopathic preparations, lunar planting calendars, livestock integration, and herb-based compost.