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Overhead view of circular vineyard rows around a round green-roofed building, a road at left and a stony channel at right
Los Chacayes, Valle de Uco, MendozaArgentinaBiodynamic Wine

SuperUco

SOO-per OO-koh
Silver Tier
Last verified · September 2026

Juan Pablo Michelini became chief winemaker at Doña Paula in 2004, and three years later he and his brothers Matías and Gerardo started Zorzal, in Tupungato. In 2010 he began work on what he calls the most significant project of his life. SuperUco was founded the next year, owned by all four Michelini brothers, Gerardo, Matías, Gabriel and Juan Pablo, with their friend Daniel Sammartino.

Malbec is Argentina's grape, and Mendoza makes most of it. The Uco Valley is the high part of Mendoza, and Los Chacayes, in Tunuyán, has its vineyards between 1,000 and 1,350 metres. Up there the gap between a hot afternoon and a cold night runs to 22 or 25 degrees, and rain averages about 300 millimetres a year. The winery says the swing gives the grapes thicker skins and sharper acidity.

A concrete building beside a timber dining deck under white canopies and tall bamboo poles, with a flower garden in front

Their own farm there is two hectares, 1.3 of them planted. The vines go round in concentric circles, which the family says gives them sun from every side, and the winery in the middle is an octagon. Demeter certifies the farm as a biodynamic grower. That certificate covers the Los Chacayes farm only: SuperUco also buys grapes from vineyards in Gualtallary, Paraje Altamira and San Pablo for other wines, and none of those is on any organic or biodynamic register Free Bacchus could find.

SuperUco Chacayes is a wine from the certified farm itself. It is half Malbec, a quarter Cabernet Franc, and the rest Merlot and Petit Verdot, from 0.7 hectares. It ferments on its own yeasts in French oak, ages in used barrels and is bottled unfiltered, and the winery says it corrects no acidity and adds no sulphites. There are about 1,500 bottles a year.

“It is a style that promotes elegance without the excesses we often see here”
Juan Pablo MicheliniCo-owner and winemaker, 2021 · Wine Enthusiast

Why it’s remarkable

1,500
bottles of SuperUco Chacayes a year
The wine comes from a 0.7-hectare parcel of the certified farm. The winery says it adds no sulphites, corrects no acidity and bottles it unfiltered.
Circles
instead of straight rows
The vines are planted in concentric circles around an octagonal winery, a design the brothers say gives the vines sun from every direction.
4 hives
and two tonnes of compost a year
A round 0.3-hectare garden, begun in 2012 and split into four sections for the seasons, is worked by hand without chemicals next to the vines.
Independently certified, and checked against the issuing body’s own register. Not a compromise on quality — see how we verify.

Free Bacchus Verification

Track A
Formal third-party certification, confirmed against the issuing body’s own register.

Demeter Biodynamic · the Los Chacayes farm only

Certified1
  • Demeter Biodynamic (Demeter International)
This page covers

The Los Chacayes farm.

Not covered1
  • Grapes bought from Gualtallary, Paraje Altamira and San Pablo
Re-verified annually against the issuing body’s register. How re-verification works
The producer’s own sitesuperuco.com
Producers don’t pay to be here. There is no fee to be listed and no way to buy a higher tier. If the evidence doesn’t hold, the bottle isn’t here.
Flagship
SuperUco Chacayes

If you’re buying

Price
Around ARS 90,000 for the 2021 at the winery's own shop in Argentina. Approximate; no US retail listing was found.
Price bands are approximate and move with vintage, market and region. They are a guide, not a quotation.

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