The Wizard, the Pre-Phylloxera Sand & the Loss of All Panic
In the village of Nieva, on a high plateau south of the Duero, Ismael Gozalo tends vines his family planted in 1748 — ungrafted, head-trained, and never touched by chemicals across five generations. From a medieval monastery cellar, he makes ~10,000 bottles a year of zero-sulphur wine in 250-year-old tinajas, Mosel foudres, and glass demijohns buried underground. He does not believe in natural wine. He believes in wine.
Origin — The Fifth Generation, the Ossian Departure & the Two Cellars
Ismael Gozalo Palomo is the fifth generation of his family to tend vines in Nieva, a village in the province of Segovia, south of the Duero, roughly two hours north of Madrid. His great-great-grandfather planted the first vines. His great-grandfather tended them. His grandfather and his father, Cándido Gozalo, continued the tradition — never using chemicals, never grafting onto American rootstock, never industrialising what the sand and the sun had already perfected. In 1998, Ismael founded Microbio Wines as a side project, a laboratory for experiments that his family's commercial winery, Viñedos de Nieva, could not accommodate.
In 2004, he partnered with Javier Zaccagnini to create Ossian — a project that would put Nieva's old-vine Verdejo on the map of Spanish fine wine. Ossian was a triumph: the wines were celebrated, the critics swooned, and the world suddenly knew that Rueda could produce something more profound than crisp, commercial Verdejo. But when Zaccagnini sold his shares to Pago de Carraovejas, a Ribera del Duero group, Ismael made a radical decision. In the early 2010s, he left the company he had co-founded and turned his full attention to Microbio — a project that made roughly 10,000 bottles a year from five hectares, while selling the remaining 75 to 80 percent of his family's grapes to Ossian.
The cellar is El Parral — a converted medieval monastery dating from the 11th to 14th centuries, located opposite the church in the centre of Nieva. It maintains a constant temperature of 10 to 14 degrees Celsius without any artificial climate control. But Ismael also works in two other underground cellars: one from his father's family (five generations deep) and one from his mother's family (three generations deep). The wines age in stone chambers that have never known electricity, let alone temperature control. It is not romantic affectation. It is simply how wine was made in Nieva before there was a choice.
Ismael is known across Spain as El Mago de las Verdejos — the Wizard of Verdejo. The title is apt. He is a man who speaks of biosinergias — a philosophy predating Steiner's biodynamics by two millennia, referenced by Pliny the Elder — who believes in destiny and balance between soil, plant, and fruit. He is a man who has lost all panic, who does not stress about fermentation kinetics or volatile acidity, who trusts the wine to make itself while he protects the conditions under which it can do so. "Lose all panic and be free. If you want to be happy always have your feet in the earth and your head in the clouds."
The Place — The Tethys Sea, the Sand & the 273-Year-Old Mothers
Nieva sits at 800 to 900 metres above sea level on the southern bank of the Duero, in the province of Segovia. The climate is brutally continental — 40°C in summer, -17°C in winter — with diurnal temperature swings of more than 20 degrees during ripening. The altitude preserves acidity; the continentality concentrates sugar; and the balance between the two is what allows Ismael to harvest Verdejo at extraordinary ripeness while maintaining the freshness that makes his wines age-worthy. But it is the soil that makes Nieva unique.
The Tethys Seabed
The ground beneath Nieva was, 180 million years ago, the Tethys Sea. The soils are pure siliceous sand, gravel, and pebbles, with calcareous deposits that recall the ancient seabed and occasional clay bands (bandas de argílico) at 40 to 50 centimetres depth that act as underground reservoirs of moisture and microbial diversity. The sand is so deep and so pure that phylloxera never arrived — the louse cannot survive in sandy soils. Every vine in Ismael's estate is ungrafted, rooted directly into the subsoil, with root systems that plunge vertically without the barrier of American rootstock.
Planted in 1748, 1847, 1868, 1872
The oldest vines at Microbio were planted in 1748 — 273 years old at last count. Others date to 1847, 1868, and 1872. For Ismael, these are not merely old vines. They are mother vines — genetic archives, sensory monuments, and the source of a massal selection programme that has allowed him to plant six new hectares with different Verdejo biotypes drawn from 150 individual vines. The yields are minuscule — roughly 35 hectolitres per hectare — and the grapes are small, thick-skinned, and intensely flavoured. Pruning these vines is a sacred task: only four of his seven team members are permitted to do it, because an open wound on a 273-year-old vine is a risk that demands absolute precision.
Viticultura Pura — Five Generations, Zero Chemicals
The vineyards have never seen chemicals — not because Ismael converted to organic farming in his generation, but because his great-great-grandfather, his great-grandfather, his grandfather, and his father never used them either. The vines were always farmed by hand, with the soul, observing the passage of time through the vines and their cycles. Ismael is certified organic, but he prefers to speak of viticultura pura — pure viticulture — a practice that requires no labels because it requires no exceptions. No herbicides. No systemic fungicides. No synthetic fertilisers. The vineyard is worked by hand, with individual attention to each vine.
Beyond Nieva — Mencía, Garnacha & Rufete
While Verdejo dominates, Ismael's curiosity extends beyond his home village. He works with Tempranillo, Syrah, and Merlot from Nieva; Mencía from slate soils in Corullón, Bierzo; Garnacha from granite soils in El Barraco, Gredos; and Rufete from the Sierra de Salamanca. Each variety is matched to its terroir, each wine is a collaboration between grape and place. It is the work of a man who believes that the best wine is made in the vineyard, who sells 75 to 80 percent of his grapes to finance the perfection of the remaining 20 to 25 percent, and who treats every hectare, every vine, every cluster as an individual conversation.
Winemaking — Biosinergias, the Demijohn & the Refusal of Panic
Ismael's philosophy is governed by a single, non-negotiable principle: the wine makes itself, and the vigneron's role is to protect the conditions under which this self-making can occur. He is not an absenteeist — he is present, tasting, racking, deciding — but he does not impose. There is no chaptalisation, no acidification, no selected yeast, no enzymatic correction, no fining, no filtration, and no added sulfur dioxide in any cuvée. The wines are 100% fermented grape juice, the product of indigenous yeasts, ancient vessels, and the constant cool of a medieval cellar.
He follows Biosinergias — a philosophy that predates Rudolf Steiner's biodynamics by 2,000 years and was referenced by Pliny the Elder. It emphasises destiny and balance between soil, plant, and fruit — a sort of bio-synergy that requires observation, patience, and the refusal to act automatically. "We observe and be quiet. Relax and take time. And only then do the things that we need to do in the vines. Never do things automatically. Each vine has his own work." This is not a technique. It is a way of being.
The vessel diversity at Microbio is unmatched. 250-year-old tinajas (1,800-litre clay amphorae, distinct from Georgian qvevri in shape and volume) for radical whole-cluster orange wines. Large Mosel foudres (1,015 and 1,050 litres) imported from Germany for the flagship Microbio Verdejo. Old oak barrels of various sizes for oxidative cuvées like Sin Rumbo. Stainless steel tanks for reductive, cloudy musts like Rack. And 16-litre glass demijohns, buried underground, for Frágil — a wine so delicate that any contact with wood or clay would obscure its crystalline character. The demijohns provide natural protection without SO₂; the wine rests on its lees in glass, developing texture and depth while remaining as transparent as a photograph.
Ismael is fanatical about temperature. He harvests by hand into small boxes when the grapes are cold — often at dawn or night — and presses them in a small vertical press, keeping the must below 12 degrees Celsius during pressing. "When you press warm grapes in the cellar you have that really nice aroma, but it disappears from the grapes — it means the wine will never have that kind of aroma again." This is the precision of the magician: not the precision of the laboratory, but the precision of the senses, of timing, of temperature, of touch.
The Wines — From the Underground Demijohn to the Tinaja Cathedral
Microbio Wines produces roughly 10,000 bottles a year across two distinct lines: Microbio Wines, the experimental range of skin-contact, oxidative, reductive, and ancestral-method cuvées; and Ismael Gozalo Wines, a slightly more classical trilogy that nevertheless remains unfined, unfiltered, and zero-sulfur. Because Ismael is not a member of any Denominación de Origen, all wines are labelled simply as Vinos de España — a deliberate rejection of appellation rules that would constrain his ancient vines and his modern imagination. The harvest is never less than six or seven weeks long, beginning with unripe grapes for the pét-nats and ending with the last, most concentrated parcels for the extended skin-contact cuvées.
Microbio "Nieva York"
Ancestral-method sparkling — NievaThe estate's ancestral-method sparkling wine — a pet-nat of extraordinary freshness, low alcohol, and saline mineral clarity. Sourced from the first, slightly unripe grapes of the harvest, pressed at low turbidity and low temperature, then bottled during the final stages of alcoholic fermentation to capture natural CO₂. Aged 8 months on fine lees; disgorged manually à la volée and topped up with dry wine from the same lot. Pale, hazy straw with a gentle, persistent mousse. The nose is crisp and mineral — green apple, lemon zest, white flowers, and a distinct saline, seabed-mineral note from the ancient Tethys soils. On the palate: light-bodied, prickly, razor-sharp acidity, and a clean, savoury finish. The white is pure Verdejo; the rosé blends Tempranillo with a small percentage of Verdejo. Zero sulfur, zero filtration.
Microbio "Frágil"
Glass demijohn Verdejo — NievaThe most delicate and transparent wine in the portfolio — a pure Verdejo from pre-phylloxera vines, fermented and aged in 16-litre glass demijohns buried underground so that nothing stands between the terroir and the bottle. The racked must is lowered into glass at the cellar's constant 13°C; after slow fermentation, the wine rests on its own lees in glass, developing natural protection without SO₂. Production: 380 bottles and 3 magnums per year. In the glass: luminous, crystalline straw. The nose is pure, sharp, and intensely varietal — green pear, quince, fennel, and wet stone. On the palate: light-to-medium-bodied with mouthwatering acidity, a gentle lees-derived texture, and a long, savoury, mineral finish. A wine for contemplation — for sashimi, grilled vegetables, fresh cheeses, and silent evenings. Zero sulfur, zero filtration.
Microbio "Kilómetro 0 — El Origen"
Extended skin-contact orange — NievaAn archaeological orange wine — profound, extended skin-maceration cuvée from pre-phylloxera Verdejo, fermented as whole clusters in 250-year-old tinajas for six to nine months, then pressed and aged in old barrels. Sourced from vines planted in 1872 on very poor siliceous sand at 910 metres. Deep, burnished amber with copper reflections. The nose is complex and oxidative — dried apricot, orange peel, walnut, wild honey, saffron, and a distinct smoky, seabed-mineral note. On the palate: full-bodied with firm, grippy tannins, vibrant acidity, and a long, savoury, mineral finish. Ismael calls it kilómetro cero — zero kilometre — because it represents the starting point of all wine, before oak, before steel, before technology. A wine for the cellar, for roasted meats, mature cheeses, and philosophical debate. Zero sulfur.
Microbio "Sin Rumbo"
Oxidative white — NievaAn intentionally oxidative white from pre-phylloxera Verdejo — hyper-oxidised during pressing to create a wine of slight volatile lift, complex aromatic evolution, and a savoury, almost umami character. Whole-cluster pressed in a small vertical press seeking hyper-oxidation of the must; transferred to 600-litre barrels for slow, oscillating fermentation. The first two weeks are slow; the second stretch is the opposite — a deliberate oscillation that produces a slight volatile acidity, relaunching the nose and increasing the perception of freshness. Aged 11 months in barrel. Production: 2 barrels per year. Deep golden straw with natural haze. The nose: baked apple, dried fig, walnut, bruised pear, and an oxidative, almost sherry-like note balanced by fresh acidity. On the palate: medium-to-full-bodied, waxy, unctuous, mouthwatering. A wine for adventurous gastronomy — cured meats, aged cheeses, rich seafood. Zero sulfur.
Microbio "Rack"
Reductive white — NievaA radical, reductive white — extreme personality made from cloudy musts fermented in stainless steel with high turbidity, no batonnage, and no racking, creating a self-protecting reduction that shields the wine from oxidation without sulfur. Mixed musts from all the estate's white wines, completed with fine fresh bubbles to raise turbidity; spontaneous fermentation in stainless steel. Aged 3 months on fermentation lees without batonnage or racking. Production: 650 bottles. Hazy, almost opaque straw with a slight effervescence. The nose is intense and reductive — struck flint, green apple, lemon pith, wet chalk, and a mineral, almost petrochemical note that resolves into pure fruit with air. On the palate: medium-bodied with a creamy, leesy texture, vibrant acidity, and a long, savoury finish. A wine for the initiated — raw oysters, grilled octopus, strong cheeses. Zero sulfur.
Microbio "Microbio"
Flagship white — NievaThe estate's flagship white — pure Verdejo from pre-phylloxera vines, whole-cluster pressed and partially destemmed, fermented spontaneously in stainless steel and aged for five months on fine lees in large Mosel foudres of 1,015 and 1,050 litres. Sourced from vines planted in 1872 on sandy soils with gravel and clay laminas at ~900 metres. Hand-harvested at dawn into small boxes; whole-cluster pressing with partial destemming. Pale straw with natural brightness and slight haze. The nose is crisp and intensely mineral — green apple, lime zest, fennel, white flowers, and a distinct saline, almost maritime note that recalls the Tethys Sea beneath the vineyard. On the palate: medium-bodied with razor-sharp acidity, a gentle foudre-derived texture, and a long, refreshing, mineral finish. The wine that proves Verdejo can achieve a finesse that transcends DO Rueda entirely. Zero sulfur.
Ismael Gozalo "Sin Nombre"
Classical line white — NievaThe most classical expression in the Ismael Gozalo line — pure Verdejo from pre-phylloxera vines that displays all the minerality, cellaring potential, and varietal grandeur that old-vine Verdejo can achieve. Fermented in a 1,200-litre oak tank and finished in stainless steel for a wine of crystalline clarity and profound depth. Rests 9–10 months on lees in oak, then 9–10 months in stainless steel. Bright golden straw with natural clarity. The nose is complex and evolving — quince, honey, dried apricot, wet stone, and a distinct smoky, mineral note from the ancient vines. On the palate: medium-to-full-bodied with a waxy, lees-derived texture, vibrant acidity, and a long, savoury finish. The only cuvée in the portfolio where Ismael permits a microscopic addition of sulphur. A wine for the cellar — roasted pork, aged cheeses, creamy pasta. Minimal sulfur.
Ismael Gozalo "Sietejuntos"
Red — NievaA red wine from Nieva — made from whatever red varieties perform best in the vintage, typically Tempranillo with possible contributions from Syrah or Merlot. Fermented spontaneously and aged with the same zero-intervention discipline as the whites. Medium-bodied, with red berry fruit, dried herbs, and the mineral backbone that defines all of Ismael's wines. It is not the star of the portfolio — the whites are — but it is a wine of quiet integrity, made without concession to fashion or market. Unfiltered, unfined, no added sulphites.
Issée
Mencía — BierzoFrom Mencía grown on slate soils in Corullón, Bierzo — the northwestern corner of Castilla y León, where the mountains of León meet the Galician coast. Ismael sources from a small parcel and makes the wine with the same hands-off approach: indigenous yeasts, no additives, no filtration. The slate gives the Mencía a mineral, almost graphite character — red cherry, wild herbs, crushed stone, and a long, savoury finish. It is lighter than the Bierzo norm, more transparent, more Atlantic. A wine that proves Ismael's magic extends beyond Verdejo and beyond Nieva. Extremely limited. Zero sulfur.
Brutal / Tentados / Ilegal
Experimental cuvées — VariableIsmael's experimental edge — cuvées that change with his whims, the vintage, and the materials available. Brutal may be a radical skin-contact white or a whole-cluster red. Tentados (the Tempted) may explore carbonic maceration or extended lees ageing. Ilegal may be a blend that breaks every rule of appellation and convention. The common thread is zero additives and total creative freedom. These are not always available. When they are, they sell out immediately to collectors who understand that Ismael's experiments are not gimmicks but genuine inquiries into what wine can be when no one is watching.
Legacy — The Wizard, the Sand & the Wine That Makes Itself
Microbio Wines matters because it is one of the most profound and uncompromising wine projects in Spain — the work of a fifth-generation farmer who walked away from commercial success to make 10,000 bottles a year in a medieval cellar, from vines planted in 1748, with zero sulphur and zero pretension. In a region where Rueda has become synonymous with crisp, forgettable Verdejo, Ismael Gozalo has proven that the same grape, from the same soil, can produce wines of extraordinary complexity, longevity, and emotional depth — wines that taste like the Tethys Sea, like 273 years of roots, like the silence of a stone cellar that has never known electricity.
His legacy is agricultural. By preserving pre-phylloxera, ungrafted vines that have never seen chemicals, by farming them by hand with a team of seven (only four of whom are permitted to prune), and by conducting a massal selection programme that has drawn six new hectares of planting material from 150 individual mother vines, Ismael has maintained a genetic archive that is irreplaceable. When those 1748 vines die, a piece of European viticultural history dies with them. Ismael is their guardian, their biographer, and their mourner.
His legacy is also methodological. The use of 250-year-old tinajas, Mosel foudres, 16-litre glass demijohns buried underground, and 11th-century stone cellars is not eclecticism. It is a toolbox for different expressions of the same terroir — each vessel chosen for the specific character it imparts, each wine matched to its container with the precision of a magician choosing his wand. The demijohn-aged Frágil is perhaps the most radical: a wine that achieves stability and complexity without wood, clay, or sulphur, protected only by glass, lees, and the cool of the earth.
And his legacy is philosophical. Ismael's refusal of the "natural wine" label, his rejection of DO Rueda, his insistence on calling his wines simply "wines" (as opposed to "chemical wines"), and his belief in biosinergias — a 2,000-year-old philosophy of balance and observation — all point to a man who understands that the most radical act is not to rebel but to refuse to categorise. He does not make natural wine. He does not make biodynamic wine. He makes wine. The rest is marketing.
From the Tethys seabed to the medieval monastery of El Parral, from the 1748 mothers to the glass demijohns buried in Nieva's sand, Microbio Wines is a testament to what happens when a farmer decides that the vineyard is older than the appellation, that the cellar is cooler than the consultant, and that the best way to make wine is to let it make itself. "Lose all panic and be free." The wizard has spoken. The wine listens. And the drinker is transformed.