McLaren Vale Grenache Comes of Age

You may have tasted the fragrant, pure-fruited Grenache wines of McLaren Vale, drawn from rare old bush vines that now define the region, but how did this once-overlooked grape transform into one of Australia’s most celebrated expressions of place?

Grenache arrived in South Australia through James Busby’s vine collections in the 1830s and established itself quickly in McLaren Vale. Dry summers, relatively low regional disease pressure and the capacity to dry grow bush vines suited the variety particularly well, especially in an era where reliability and yield carried commercial importance for fortified wine production. McLaren Vale also remained phylloxera free, allowing substantial areas of old own rooted Grenache to survive while many comparable vineyards elsewhere in the world disappeared or were replanted.

For much of the twentieth century, many of those vineyards were viewed primarily as blending material rather than fine wine sites. Grenache largely disappeared into regional blends where the emphasis sat with ripeness, alcohol and consistency rather than vineyard distinction. Some of the old bush vine vineyards now producing Australia’s most site expressive Grenache wines, like Wirra Wirra’s newly acquired Trott Vineyard, survived through decades where the potential of both the variety and site remained largely overlooked.

The current shift taking place in McLaren Vale increasingly carries broader significance for warm climate fine wine generally. Historically, the fine wine conversation around site expression was largely dominated by cooler European regions like Burgundy and Rheingau. Barolo proved that warmer regions could also transmit site with extraordinary precision when tannin, acidity and extraction remained in balance. McLaren Vale Grenache increasingly suggests a similar shift may be occurring in Australia, with the best sites challenging that distinction. The wines can achieve full flavour ripeness without accumulating the broad, diffuse tannin profiles historically associated with warm climate Grenache.

Deep sands in Blewitt Springs consistently produce finer and more persistent tannin profiles than the heavier clay-based vineyards further south. The wines generally remain in the red fruit spectrum, aromatics tend to sit higher, and the structures carry a distinctly sandy texture and tensile shape. Lower overnight temperatures preserve acidity effectively while still allowing substantial flavour development. Further south and west around Whites Valley and the Aldinga border, loams over limestone and calcareous soils generally produce wines with greater phenolic breadth, darker spice profiles and broader structures through the middle palate. Afternoon maritime influence also becomes increasingly important in these areas. 

Those soil distinctions can become remarkably pronounced across relatively small distances. McLaren Vale contains more than 55 geologies and over 40 soil types within a compact region. Once yields are controlled and extraction becomes more restrained, Grenache responds to those differences with unusual precision. Increasingly, the distinctions between sites emerge less through simple flavour profile and more through tannin architecture itself.

Wirra Wirra’s recent custodianship of the Trott Vineyard in Blewitt Springs reflects how significantly Grenache has shifted within McLaren Vale over the past 20 years. The vineyard was planted in 1952 on deep Maslin sands over clay and ironstone at around 200 metres elevation. For much of the twentieth century, vineyards like Trott would largely have disappeared into regional blends. Increasingly, those same vineyards sit at the centre of the conversation around Australian site expressive Grenache.

The site consistently produces a markedly different structure to many lower lying clay-based vineyards in the region. The fruit profile remains firmly in the red spectrum, aromatics carry significant lift and the tannins retain the persistent sandy texture increasingly associated with the finest Blewitt Springs sites. The distinction increasingly shifts the conversation around Grenache away from simple flavour profile and toward structure, tannin shape and vineyard expression.

That shift has also altered the way Grenache is handled in the winery. Historically, the variety was often picked relatively ripe and handled quite heavily. Extraction levels were higher; oak played a more prominent role and alcohol levels frequently climbed. The wines could become broad quickly, particularly where yields were less carefully managed.

Ceramic and large format foudre vessels in the Wirra Wirra winery.

Earlier picking retained acidity and aromatic definition more effectively. Whole bunch fermentation introduced greater savoury detail, spice and structural tension. Larger format and older oak reduced the influence of maturation vessel on the finished wines. Increasingly, distinctions between vineyards began emerging more clearly through tannin profile, aromatic lift and palate structure rather than simply fruit weight.

The current Grenache wines at Wirra Wirra increasingly reflect those site differences.

The Dry Grenache Rosé is built from a handful of McLaren Vale vineyards and handled gently in the winery. Cool fermentation and time on lees contribute texture and savoury detail rather than overt fruit sweetness. The phenolic profile sits closer to southern French rosé than many contemporary warm climate rosé styles, with citrus peel, spice and phenolic grip carrying as much importance as primary fruit.

Farmer’s Heart draws together multiple old vine sites across McLaren Vale, including vineyards on sand, clay and loam-based soils. Sand based sites contribute finer tannin profiles, red fruits and aromatic lift. The heavier soils contribute darker spice characters, greater phenolic breadth and more structural weight through the middle palate. The finished wine reflects an increasingly important characteristic of McLaren Vale Grenache generally. The region can produce wines with substantial flavour concentration while still retaining transparency and structural detail.

Flower Vineyard sits in the McLaren Sandhill district on deep Maslin sands over Pirramimma sandstone. This sandy site has more in common with Blewitt Springs, consistently producing wines with finer and more persistent tannins than many of the heavier soil vineyards further south. The wine generally remains in the red fruit spectrum, with blood orange, spice and lifted aromatics sitting above a comparatively tensile structure.

Blagrove Vineyard just east of the Wirra Wirra winery produces a fleshier and more savoury expression. The old bush vines and heavier soil profile create greater phenolic breadth, darker fruit characters and more structural authority through the palate while still retaining freshness.

The Absconder draws heavily from elite old vine parcels in Whites Valley. Open fermenters, restrained extraction, seasoned oak and extended skin contact preserve site definition. Floral aromatics, layered spice, savoury complexity and tannin persistence increasingly define the wine more strongly than simple fruit weight or oak influence.

For many years, Australian fine wine largely associated quality with scale and power. Contemporary Grenache challenges that assumption. The best wines from McLaren Vale still carry the warmth and flavour concentration associated with the region, although their distinction is progressively from tannin profile, aromatic definition and site transparency.

For more information, please contact Wirra Wirra CEO, Matthew Deller MW via email here.