The cone, the sphere, the ellipsoid, the tulip, the truncated pyramid – wine vats come in a bewildering array of shapes these days, but none has made as much of an impact on the 21st-century wine world as the egg.

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The cone, the sphere, the ellipsoid, the tulip, the truncated pyramid – wine vats come in a bewildering array of shapes these days, but none has made as much of an impact on the 21st-century wine world as the egg. The advantages of the egg-shaped vessel are several. As carbon dioxide rises through the must during fermentation, the ovoid shape creates a convection current – like a natural pump-over – which facilitates homogeneity of the must and uniform fermentations.

If the wine remains in the egg for maturation, that current continues. Werner Michlits of Meinklang in Austria explains that as heavier molecules in the wine polymerise, they sink to the bottom of the vessel and push lighter ones upwards. This creates a continuous battonage, increasing lees contact and enhancing the wine’s texture. Benefiting from the flavour neutrality and micro-oxygenating properties of the materials they are made of (concrete, clay, high-vitrification ceramics), eggs also promote fruit purity and aromatics. https://imbibe.com/news/its-all-ova-now-the-rise-of-egg-fermenters/

While concrete is by far the most common material for egg-shaped wine vessels, it’s not the only one. In 2012 an American company, Flextank, launched the first egg-shaped vessels made from durable oxygen-permeable polyethylene. They’re relatively cheap – the Orion 20hl egg tank costs $2,525 (£2,014), compared to a Nomblot 17hl egg that costs €6,100 (£5,515). Recyclable and easy to clean, Flextanks are built to last up to 20 years – that’s more than double the life of oak barrels.

They also come in heavyweight and lightweight options, which, the manufacturer says, simulate the micro-oxygenation processes of neutral and two-year-old oak barrels, respectively. Slovakian producer Slobodne has reported early positive results from its two Flextanks, which have joined its handsome collection of qvevris and tinajas. If you’re a winery with money to burn, you can also invest in the Rolls-Royce of egg-shaped vats – the Taransaud Ovum.

Launched in 2010, this 20hl vessel is priced at €45,000 (£38,984) and has been snapped up by wineries across the world, including Domaine de Chevalier in Bordeaux, Drappier in Champagne, Biblia Chora in Northern Greece and Tony Bish Wines in Napier, New Zealand. When it comes to wine quality, however, the Taransaud Ovum may not be the last word. The best material for ovoid containers, according to Australian master craftsman Philip Sedgman, is ceramic. Sedgman is an expert in flowform structures – water-flow devices associated with biodynamics. His elegant 675l Magnum 675 ceramic egg, priced at AUD$6,750 (£3,882), was inspired by the ‘Natural Selection Theory’ group of winemakers: Tom Shobbrook, James Erskine, Sam Hughes and Anton Von Klopper.

 

What happens inside the egg?

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the currently prevailing theory holds that the heat of the ferment creates a torus vortex of convection currents (similar to the form of a mushroom cloud) within the egg. This moves the fermenting must or maturing wine around without intervention. Liquid near the surface of the container cools and gently sinks, unimpeded by corners. The liquid in the middle holds its temperature, but is gently pushed upwards. It then comes closer to the container surface, begins to cool and continues the process. The lack of corners in the container mean there are no “dead areas” and so homogeneity within the wine

Concrete egg

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if you love the winemaking traditions of the Caucasus, you might argue that the egg fermenter never left.

Like most questions when it comes to wine, the answer is most likely to be a matter of taste. So comparing the fermentation methods of different wineries is the best way to determine if the egg is worth the squeeze.

However, the answer to one penetrating question is clear. What came first, the barrel or the egg? Clearly the egg.

Oregon made qvevri

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Andrew and Annedria Beckham are the owners of Beckham Estate Vineyards in Sherwood, Oregon, where Andrew is the winemaker. Unique to Beckham Estate Vineyards, Andrew Beckham blends his two passions, wine and art, using Amphorae. Amphorae are terra cotta vessels used as part of an ancient tradition of winemaking in terra cotta vessels, thought to originate in the Republic of Georgia. This is part two of the Beckham oral history interviews. This interview takes place at Union Wine Co. in Tualatin, Oregon where Beckham stores and makes his wine. In this interview, Beckham tells about his experiences using Amphorae. To access more material in this collection, please visit Digital Commons at http://digitalcommons.linfield.edu/ow…. https://www.youtube.com/watch?v=BB1MW2kB3a4

Concrete helps to understand terroirs

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One of his first steps was to replace stainless steel and wood fermentors with large, tulip-shaped concrete vats for all three wines, which are fermented with wild yeasts.

“With two years of aging in barrel,” says Ruini, “I don’t want to add more wood. Concrete is neutral. Steel has a reducing effect on wine—it’s not the best.”

Trelab presented a poster about ongoing Qvevri research at the recent Washington Association of Wine Grape Growers annual meeting.

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Trelab presented a poster about ongoing Qvevri research at the recent Washington Association of Wine Grape Growers annual meeting.

via The Qvevri Project.

Qvevri Project Home Qvevri Wine comes To Texas and the United States

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Qvevri Project Home.

the 2 d Qvevri Wine Symposium in Georgia – Four Monasteries and no funerals: Georgian Adventures

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Qvevri Wine Symposium in Georgia. Some were writers and photographers, some were winemakers who used clay pots in their vinification, and others were grizzled wine trade pros with a natural swerve to their step. The trip was organised to a t, balancing the needs of education, culture-vulturing as well as copious spiritual – and spirituous – refreshment. One can say without doubt that coming into contact with another culture teaches you about your own.

via Four Monasteries and no funerals: Georgian Adventures.

All you needed to know about Qvevri but were afraid to ask

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All you needed to know about Qvevri but were afraid to ask.

Kvevri how to deal with

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Check this article by Giorgi Barisashvili, an absolute minefield of useful info about the qvevri

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