Sémillon

Sémillon comes from south-west France. VIVC records France as its country of origin, and in Jancis Robinson's words, "Semillon’s homeland is undoubtedly south-west France, not just Bordeaux but the many surrounding wine regions such as Bergerac". Its parentage is unknown: both parent fields in its VIVC passport are blank, and no full pedigree is recorded. The passport does flag offspring, but WineWiki's VIVC-derived lineage data links no children or siblings for Sémillon.

• VIVC prime name: Semillon; VIVC variety number 11480; country of origin: France
• Place of origin: south-west France
• Parents: none recorded (parentage unknown)
• Offspring: flagged in the VIVC passport; none linked in WineWiki's lineage data

Bordeaux is the most important region for Sémillon in France, and the variety has a long history there. Hunter Valley Wine Country dates its arrival in Australia to 1831, as part of James Busby's collection, with its first Australian home in the warm, humid Hunter Valley. In the mid 20th century the grape was most famous for a wide range of low-alcohol, long-living dry whites produced in the Hunter Valley, and early Hunter Valley Semillons were often labelled Hunter River Riesling, Hock, White Burgundy or even Chablis rather than by the grape's own name.

• Bordeaux is the most important region for Sémillon in France, where it has a long history
• Australia: its first Australian home was the warm, humid Hunter Valley
• Hunter Valley: early Semillons were often labelled Hunter River Riesling, Hock, White Burgundy or even Chablis

Sources differ on Sémillon's acidity: bordeaux.com describes it as naturally low, while WSET teaches that Sémillon wines can range from medium to high in acidity and light to full in body depending on ripeness. The nose runs to pear, quince, mango and apricot, wrapped in honeyed notes and acacia blossom. Youthful wines typically show primary flavours of apple, lemon and grass, which give way to dried fruit, honey and nuts as the wine matures. In Bordeaux, where it is commonly blended with Sauvignon Blanc for both dry and sweet wines, Sémillon contributes body and ageing potential to the blend. Dry Pessac-Léognan whites such as Châteaux Haut-Brion Blanc and La Mission Haut-Brion Blanc, both containing substantial proportions of Sémillon, take on depth, density and lanolin smoothness with lemony acidity as they age. Sauternes is sweet, medium to high in alcohol and full-bodied with high acidity, with pronounced stone fruit flavours of apricot and smoke and vanilla from oak maturation. Hunter Valley Semillon is a distinctive style of dry, single-varietal Semillon with light body and low alcohol, and over time it morphs from a zesty, crisp youngster into a deep golden, nutty, honey and straw-scented wine. Barossa Valley Semillons range from wines very similar to those of the Hunter Valley to wines that are full-bodied and oak-matured. In many warmer wine regions Sémillon's naturally relatively low acidity can need the nerve and crispness that Sauvignon Blanc provides.

Because Sémillon is particularly susceptible to botrytis, it is the most important variety grown in Sauternes, and for sweet styles it thrives on gravel, clay-limestone and shallow limestone soils, especially in Sauternes and Barsac. In Australia's warm, humid Hunter Valley, grapes picked early make low-alcohol dry whites that are built to last, often improving for decades. In Pessac-Léognan and Graves, wines are typically blends of Sauvignon Blanc and Sémillon, and in Margaret River Sémillon is commonly blended with Sauvignon Blanc. South Africa has deep historical roots with the grape: it was by far the most planted grape variety there in the early 19th century.

• Sauternes and Barsac: Sémillon's thin skins are prone to noble rot; the standard blend is 80% Sémillon to 20% Sauvignon Blanc plus a dash of Muscadelle
• Hunter Valley, north of Sydney: grapes picked at a low baume, usually around 10 to 11% alcohol, fermented at cold temperatures in stainless steel and bottled as soon as fermentation stops; sandy alluvial soils near the Hunter River give lighter, more delicate Semillons
• Hunter Valley: Jancis Robinson counts Tyrrell's Vat 1 and McWilliams Mount Pleasant among the top Semillons
• Pessac-Léognan and Graves: typically blends of Sauvignon Blanc and Sémillon; Châteaux Haut-Brion Blanc and La Mission Haut-Brion Blanc both contain substantial proportions of Sémillon
• Margaret River: Sémillon is commonly blended with Sauvignon Blanc, a style born in Western Australia; more age-worthy styles tend to be oak fermented and/or oak matured

Young Hunter Valley Sémillon is almost water-white, with aromas of citrus, grass, straw, lanolin and subtle green herbs, a chalky minerality and crisp acidity; the finest examples transform after as little as five years in bottle, revealing honeyed, toasty, grilled nut characters, almost as if the wine had spent time in oak even though it has not. Sauternes sits in a different register: sweet and full-bodied, with pronounced apricot fruit, smoke and vanilla from oak maturation and high acidity. Very good and outstanding Sauvignon Blanc and Sémillon blends from Graves and Pessac-Léognan are often matured in oak and develop complex flavours of honey and nuts in the bottle.

• Hunter Valley (young): almost water-white; fresh citrus flavours of lime, lemon and grapefruit; crisp acidity; light body; about 11% alcohol
• Hunter Valley (aged): deep golden hues; honey, toasted brioche and beeswax; seems oaked but is not; the best keep a nucleus of fine acidity after decades in the cellar
• Sauternes: sweet; pronounced apricot; smoke and vanilla from oak maturation; high acidity
• Graves and Pessac-Léognan blends: Sauvignon Blanc and Sémillon; honey and nuts develop in bottle

Hunter Valley Sémillon is made with minimal intervention: the grapes are harvested early, when sugar levels are low and acidity is high, crushed with minimal skin and seed extract, fermented at cold temperatures in stainless steel and transferred to bottle as soon as fermentation stops, and most is made without oak. Harvesting grapes perfectly affected by botrytis can involve many passes through the vineyard to pick each bunch at an optimum stage of infection, and careful vinification and long ageing in new oak barrels can then result in luscious, long-lived wines. For the Sauvignon Blanc and Sémillon blends of Pessac-Léognan and Graves, the very good and outstanding wines are often matured in oak.

• Hunter Valley: early harvest at a low baume, usually around 10 to 11% alcohol; cold stainless steel fermentation; mostly no oak; bottled young
• Botrytis-affected grapes: many passes through the vineyard to pick each bunch at an optimum stage of infection; careful vinification and long ageing in new oak barrels
• Bordeaux liquoreux: one vine produces barely a glass of sweet wine, compared with a full bottle for a dry white
• Graves and Pessac-Léognan Sauvignon Blanc and Sémillon blends: the very good and outstanding wines are often matured in oak

Jancis Robinson's list of top Semillons, or Semillon-dominated wines, takes in the sweet white Bordeaux of Château d'Yquem and Château Climens, the dry white Bordeaux of Château La Mission Haut-Brion Blanc and Château Haut-Brion Blanc, and Tyrrell's Vat 1 and McWilliams Mount Pleasant in the Hunter Valley. Tyrrell's makes Vat 1 only from the best old blocks of Semillon on its estate, with the Short Flat Vineyard, where the oldest plantings date back to 1923, always at its centre.

• Sweet white Bordeaux: Château d'Yquem, Château Climens
• Hunter Valley: Tyrrell's Vat 1 (Short Flat Vineyard at its centre, oldest plantings 1923), McWilliams Mount Pleasant
• Pessac-Léognan dry: Château Haut-Brion Blanc, Château La Mission Haut-Brion Blanc

Hunter Valley Sémillon is quite austere in youth. The finest examples transform after as little as five years in bottle, and the best retain an identifiable stamp of primary fruit and a nucleus of fine acidity even after decades in the cellar. Jancis Robinson calls Sauternes and Barsac the longest-living wines in the world, and Sauternes can mature for many years in the bottle. Dry Pessac-Léognan whites such as Haut-Brion Blanc and La Mission Haut-Brion Blanc can last for decades.

• Hunter Valley Sémillon: develops complex fig, toast and honey character with 6 to 8 years of age and often keeps improving for decades
• Sauternes: can mature for many years in bottle
• Dry Pessac-Léognan: Haut-Brion Blanc and La Mission Haut-Brion Blanc can last for decades

Primary sources: https://www.vivc.de/index.php?r=passport%2Fview&id=11480 ; https://www.wsetglobal.com/media/13022/wset_l2wines_sessionplans_en_may2023_issue2.pdf ; https://www.bordeaux.com/en/grape-varieties/semillon/ ; https://www.wineaustralia.com/market-insights/regions-and-varieties/semillon ; https://www.winecountry.com.au/blog/the-hunter-valley-guide-to-semillon ; https://www.tyrrells.com.au/wine/2025-vat-1-semillon Reference sources: https://www.jancisrobinson.com/learn/grape-varieties/white/semillon Last verified 2026-10-17