Purity is often pretty high up on the list of desirable attributes when it comes to fine wine. But this intent is sometimes at odds with the process of winemaking. A process which involves plenty of influence beyond just the grapes. Even in low intervention wines (those that eschew additives, commercial yeasts etc), oak, concrete tanks, stainless steel, glass and cork – are all typically used. Wine is a hugely volatile liquid and much of this equipment’s influence is necessary in order to protect it from spoilage and oxidation. But each material brings its own texture and flavour. For vignerons obsessed with terroir expression, and therefore wines without affectation, how can winemakers reduce the impact of their tools, while preserving wine’s purity? The use of stainless steel tanks in winemaking was first introduced in the early 1960s and marked a new chapter in bringing greater fruit purity to wine. Bordeaux legend Émile Peynaud was a key advocate of their adoption. Stainless steel was soon endorsed throughout the winemaking world, bringing a new level of clarity and precision to wine. Its lack of porosity meant that the fruit flavour was less compromised. The introduction of temperature-controlled tanks could also keep fermentations cool, avoiding the loss of the grapes’ aromatics and preserving the vibrancy of the fruit. It is also very effective in protecting the wine against oxidation. But, despite stainless steel’s seeming neutrality, many winemakers have turned their back on it, favouring concrete and oak vessels, and now even tanks made from glass instead. The issue with stainless steel is particularly noticeable in places like the Southern Rhône, where the Mistral wind plays havoc with wines in steel tanks. Quite how an annual wind that blows through the valley can have such an effect, might seem a mystery to many, but winemakers have realised that this wind causes strong variations in air pressure – resulting in huge amounts of static electricity being stored in vessels that conduct it. A steel tank is much more conductive than a concrete one or the inert oak barrel. It turns out the huge build-up of static electricity can considerably alter the texture of a wine, particularly when it comes to a red wine, rich in tannins. For Xavier Vignon – one of the Southern Rhône’s most celebrated winemakers, consultants and all-round alchemists – this became even clearer under the dark cloud of Covid. Vignon caught Coronavirus early on in the outbreak, and like many, he lost his ability to smell and taste for a number of months. Professionally, this is potentially disastrous for a wine consultant whose artform is blending. But losing his smell and taste, at least for a time, allowed him to concentrate on other factors when it came to the blend. When I spoke to Vignon, he made a point that fortunately he was sick between March and May – a time when, commercially, he wasn’t required to blend. This however, allowed him to experiment with things beyond flavour. “Without taste you start to concentrate on texture,” he says, “the composition, the balance. This started to dictate my blending and my winemaking.” Vignon believes the static electricity in stainless steel tanks has a number of negative effects on the texture of the wine. “It destroys the roundness of the wine, it destroys the sweetness. The softer tannins are reduced, whilst the harder tannins stay in the wine.” Static electricity is everywhere. Vignon tells me how a petrol tanker travelling down a motorway can generate so much static electricity that, if not earthed, touching it would be fatal. For wine, Vignon says, “The electricity from the top to the bottom of the tank can be as much as 50 volts; 9,000 hectolitres can produce 600 volts of static electricity!” While the return to concrete tanks and large old wooden casks is preferable for most in the Southern Rhône, Vignon still believes this is a compromise. “Even in concrete tanks there is iron in the composite, which creates static electricity in the blend,” he explains. The clay amphora – a trendy maturation alternative – also brings its own distinct chalk-like texture, so for him is not a solution. Inert oak is a successful counter to the problems of static electricity, but it is not a neutral vessel. While oak has an affinity to certain grape varieties – many perceive its ability to accentuate certain fruit and spice characteristics – if on a quest for purity, the use of oak will always be a trade-off. It is not only oak’s flavour, but its porosity that has the biggest effect on compromising a wine’s purity, particularly with smaller barriques. “The difficulty for small volumes of wine is that it is exposed to lots of oxygen – since the tank is smaller and it is easily affected by atmospheric temperatures as well as humidity, this causes lots of evaporation,” says Vignon. “To protect the barrel from oxidation you therefore need to keep topping up the barrel. Every time you top up, you are adding oxygen to the wine. Therefore, you have to keep adding more SO2 also.” This, Vignon feels, masks purity. This led him to experiment with ageing wines in the ocean – an experiment that worked to great effect. Wines aged in barrels in the sea saw no change in temperature, no variation in pressure, and no static electricity build-up. This meant there was no evaporation. Therefore, there was no need to top up the barrels and removed the need to continually add more SO2. His experiments resulted in Vignon’s “vinarium technique”, where he suspends barrels of wine in larger tanks of wine – enabling him to age the wines for long periods of time without having to expose them to oxygen. While this might solve oak’s issues of oxidation, limiting SO2 inputs and avoiding the textural alterations caused by static – it still doesn’t avoid the compromise of oak’s flavour impact. There is one material in winemaking, however, that eliminates this and is starting to make inroads across the fine wine regions of the world: glass. Many top winemakers in Bordeaux, Burgundy and beyond are already experimenting with it – although many are not yet willing to go on record just yet. It is not that they are unhappy with the results, but they feel it is too early to be completely sure. These include the very finest châteaux and domaines around the world. Glass, unlike stainless steel is inert so there are no issues with static electricity. Glass, unlike oak, is non-porous and therefore does not impart any flavour to the wine. With these qualities combined, could it become the material of choice for the vignerons desperate to produce wines of absolute purity? WineGlobe is a French company that has started to produce giant spherical glass containers of different sizes to ferment and mature wine. Designed by Michael Paetzold, an oenologist by training, a scientist and a vigneron – he claims they are the first glass vats in winemaking history. After three years of trialling the vessels, the result amongst winemakers around the world has been impressive. David Suire, celebrated Bordeaux wine consultant and winemaker at Ch. Laroque, believes that the making and maturing of wines in glass globes produce wines that “are surprisingly whole, with their flesh... mouthfeel and a radiance of unique purity.” For Vignon, glass is the logical solution from his own experimentation – so much so, he is in the process of building a winery made completely of glass. Grapes, and the resultant wine will have no contact with any porous or static material in his quest for purity. It has seen him embrace this material with great excitement and it is revolutionising his approach to winemaking. His next hurdle, is how to avoid the cork. The cork is another porous material that can potentially influence the flavour of the wine. While cork taint has been greatly reduced, it is the cork’s porosity – even as a composite – that is the issue. It is one step away from producing a wine completely unaffected by its materials. Vignon does not have a solution yet, but is experimenting with melting the glass at the top of the bottle neck – therefore avoiding the need for a closure at all. How this works practically and commercially is still yet to be seen. While it remains too early to say, glass has the potential to become a much more prominent material in winemaking. At the moment, it remains an expensive option – therefore limited to fine wine for now, and even then, there are few, if any, cuvées made entirely by glass. But if the technology allows for it and it continues to find favour in the winemaker’s experiments, it could go some way to solving vignerons’ quest for purity. Browse all wines or read more Editorial 

Producing a wine free of affectation is the goal for many winemakers. We explore the different approaches vignerons are experimenting with in a bid to produce wines of greater purity

Exploring the different approaches vignerons are experimenting with in a bid to produce wines of greater purity

Finding purity through new winemaking approaches

In search of purity

Xavier Vignon could best be described as a maverick winemaker whose inquisitive mind and extraordinary experiments have taken him on journeys all around the world, working on some of the must cutting-edge developments in today’s burgeoning wine scene. Initiated into oenology from a scientific background he has always had the benefit of operating free from the shackles of tradition yet now in his 40th year as a winemaker, his wealth of experience has seen him integrate his science with sensibility, developing an appreciation of producing wine in its most natural form.  We spoke to an initially noticeably weary Xavier Vignon, who is still recovering from a fairly serious bout of COVID-19. However, as soon as he starts to talk about his current projects he becomes distinctly more animated as he begins to describe all the fascinating projects he is currently working on.  This is a vigneron who clearly cannot stay still for long and has a huge drive and enthusiasm for his work. In fact, in his early days as a vigneron he was on the move all over the world working in Australia, South Africa, New Zealand, California for half of the year whilst returning to his native France to work through the harvest in the northern hemisphere. He carried out 40 harvests in 20 years.  His winemaking career started in Champagne before exploring the other wine regions of France, working in Alsace and Bordeaux among others. Coming from a family of stonemasons whose philosophy was to travel when young, he was encouraged to explore the world before settling down. These travels and the variety of experiences working in oenology from one country and climate to the next are surely a vital part of the puzzle for Xavier’s success as a winemaker. It was the Rhône Valley that finally stopped him in his tracks. Admitting he had never really
been interested in the wines of the Southern Rhône, hence the reason he arrived there later in his career, only to find that it had everything he was looking for. A huge variety of terroirs, varying altitudes, an array of grape varieties. This meant lots of freedom in blending (reminding him of his work in Champagne) lots of work on tannins (harking back to Bordeaux) and working in warmer climates of the new world. He was well-prepped to take on the region, setting up his own laboratory and consultancy practice initially advising for 20 – 25 winemakers before it expanded to over 500 in the region. Minerality, water and wine Xavier’s technical skills certainly helped many traditional vignerons to develop their wine
for global export but it also gave Xavier a tremendous opportunity to explore the multitude of wines throughout the region. Xavier became fascinated with things that were clearly evident in tasting so many wines of the region, which his scientific background couldn’t always explain. “Minerality” for example, is a term bandied around wine circles everywhere you go. We all know it exists but science cannot tell us what it is. It is not clear that we even all think it is the same thing, Xavier claims.  He was part of an extensive global research paper exploring what consumers and wine professionals identify as “minerality”. The study interviewed 5,000 consumers and 5,000 professionals resulting in no clear evidence that people were talking about the same thing. The only clear answer was that Chablis had minerality! Half the study thought more about smell, 50% thought about flavour. There is no definition still states Xavier. But this began his fascination with water and for him the key to understanding the secrets of minerality – despite him knowingly accepting he had no scientific data to prove it. This was his first step towards trusting his sensibilities over scientific analysis. For him you need to look to water to understand minerality. 85% of wine is water, water is
a huge proportion of what we taste, he states. Xavier looks to mineral water companies, even beer and whisky companies who have invested much more analysis on the affects of water, than the wine industry, largely because they have more money to do so, but also because water plays a much bigger role in their taste profile (in beer water is 90-95% water compared to wine which technically is 100% grape juice).  In their analysis of mineral salt, bottled mineral waters from different parts of the world have distinctly different levels of each mineral affecting the flavour of the water. Beer companies have also accepted that their beers made in different factories around the world taste different depending on where they are made because of the composition of the water. Whisky famously is obsessed by the quality of its water in regard to the final flavour profile of each distillery.  "So why not wine too?", asks Xavier. In different parts of the Rhône he identifies how high levels of silica in a wine makes the wine taste more acidic. How different chloride minerals provide a flavour of salinity in the wine, magnesium creates bitterness and so on. Scientific analysis doesn’t register the difference, but the difference is extraordinarily apparent when tasting. The effect of water is intrinsic, Xavier believes, to the strong mineral flavours of the Southern Rhône. The wines of the region could never taste like they do elsewhere because of the effect of the mistral. The mistral wind in places (particularly Châteauneuf-du-Pape) is so strong that it evaporates water from the berries, heightening the concentrations of mineral salts the grapes have absorbed in the water from the ground whilst the water evaporates from the berries. Xavier believes Gigondas, where the vines tend to be more protected from the mistral due to the protection of the hills, is less mineral for that reason. Xavier’s fascination with the effects of water on wine was a big reason why he began his
Arcane series, a set of one-off wines that are produced with minimal manipulation. He looks back at some regions he has worked in, stating parts of California and Australia require one to one and a half tonnes of irrigated water just to produce one bottle of wine. This is crazy! Whilst we have the science and technology for this to work, it doesn’t make sense. The Arcane Series of wines by Xavier The first wine made from the Arcane series was called “Le Diable” – translates as “the devil”. It came about when one of the vignerons he was advising took him to a high altitude Mourvèdre vineyard. The winemaker now in his eighties had struggled his whole life to get the Mourvèdre this high up to ripen, never achieving the results to use in his final wine. Xavier convinced the vigneron not to harvest the grapes with the rest of his crop, to leave the grapes on the vine and to see what happens.  It was 2015, a very late harvest already Xavier recalls but this extended Indian summer caused something in the vineyard they couldn’t believe. As the grapes continued to ripen and sugars increase, the acidity also started to go up as well! They had never seen anything like it. Xavier convinced the grower to sell him the grapes and produced the wine made just from these grapes. Xavier took the wine back to the elderly grower, who on tasting the wine began to cry. In his lifetime he had never been able to produce a wine from the vineyard, particularly not a 100% Mourvèdre!  Xavier named it Le Diable, the nickname of the Mourvèdre in the Southern Rhône because it was so difficult to ripen. Xavier knew that what happened in 2015 was unlikely to be repeated. This was a wine that made itself. It was vines in the perfect place at the perfect time and this is what he wanted the Arcane series to represent. Ever since, the Arcane series (now in its 6th and 7th cuvee to be released in the next few weeks) are complete one offs never to be repeated. The story behind the Arcane series informed Xavier’s winemaking philosophy ever since. Whilst he believes we can use science and technology to manipulate wines, he wanted to move away from this, preferring nature to tell him where and when he should make the wine. That hasn’t stopped him experimenting however and there are plenty of other cuvées that
show off Xavier’s inquisitive scientific brain operating at full speed. He is currently working with a winery in Turkey that wants to produce a wine free of any manipulation. Not only organically and biodynamically grown, natural yeasts etc but they even want the fermentation and maturation vessel to have no impact on the wine – he came up with the “vinarium” – a dark glass tank for fermentation and maturation – a natural product that does not infuse any flavour in the wine.  His next experiment is to get rid of closures altogether by extending the neck of the bottle and melting the glass at the top to seal the wine without any other material such as cork to affect the flavour. He eventually wants to create individual wines from individual vines!  He is experimenting with ageing wines both in the ocean and with his own invention of submerging a tank of wine within another bigger tank of wine. He does this with his Châteauneuf-du-Pape Cuvée Ange, comparing the process to a baby in a womb, completely protected from the outside world.  He believes you can age wine like this for 50 years without any need for sulphides or racking because there is 100% humidity and an even atmospheric pressure on the wine all the time. It’s an expensive operation and for the moment not possible for all his wines. But the level of experimentation and inquisitiveness gives you a good impression the sort of lengths Xavier will go to to push the boundaries of modern winemaking. He has no problem blending a Châteauneuf-du-Pape with a Côtes du Rhône village cuvee to make it a better wine only for it to be downgraded to a Vin de France because a Châteauneuf-du-Pape cannot be included in a blend and be titled Côtes du Rhône Villages. His interest lies in how it tastes, accentuating the multifaceted variety and complexity that exists in the Southern Rhône, rather than the traditional restraints of the appellation system. This is a maverick whose wines today are some of the most exciting in the Southern Rhône. Discover all Xavier Vignon listings or read more Editorial

Based in the Southern Rhône for the last 25 years, Xavier Vignon has amassed a huge following from critics and consumers alike, with his wines often scoring in the high nineties, yet remaining extraordinary value. We caught up with him to find out the secrets to his success

Southern Rhône winemaker maverick Xavier Vignon on the secrets to his success and high-scoring wines

Xavier Vignon, a Rhône wine innovator

Xavier Vignon: A Rhône radical

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