`Plexus` Barossa Valley Marsanne/Roussanne/Viognier

Barossa Valley

John Duval

One of the world’s great winemakers, John Duval was given the ‘Grange’ torch...

by Max Schubert, the man who created Australia’s most famous wine. John passed it on to his successor when he left Penfolds in 2003 to start his own label. He sources fruit from long-time friends in the Barossa, all of whom own vineyards with vines aged from 50 to 100 years old. The wines are made with minimal intervention and showcase the best of the Barossa.

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Marsanne was sourced from the Marananga and Seppeltsfield regions, Roussanne from the Kalimna region and Viognier from Eden Valley.

Vintage Information

The 2015 vintage started with a warmer than usual spring followed by early but even flowering and fruit-set. Frost, particularly in the Northern Barossa, reduced yields, however conditions during fruit ripening were pleasingly mild and dry with rain in mid-January bringing some welcome relief. Picking started early on 6th February for Marsanne. Due to the impact of frost, a much smaller parcel of Roussanne was able to be secured, which matured slightly later and was picked on 19th February. Viognier was sourced from the cooler Eden Valley, picked in mid-March.


Gentle pressings were combined with free run juice and cold settled. Fermentation commenced in stainless steel, but 50% of the blend (some of the Marsanne and all of the Viognier) finished fermentation in fine grain French oak, where it was aged for about six months. It was then blended with the remaining Marsanne and Roussanne, which was aged on lees in tank to enhance the structure and texture of the wine. Only 10% of the oak was new.

Tasting Notes

Attractive pale straw colour with aromas of stone fruits, dried apricot and subtle Asian spice. Medium-bodied with good texture and richness, it has a savoury finish which is well balanced with the fresh acidity. Flavours of nectarine, mandarin and pear linger after the last drop.

Vintage Information

Vintage 2015
Grape varieties 71% Marsanne
20% Viognier
9% Roussanne
Region Barossa Valley, South Australia
Winemaker John Duval
Alcohol (ABV) 12.5%
Acidity 5.54g/l
Wine pH 3.32