Sémillon

Sémillon is a historic Bordeaux white grape renowned for richly textured dry wines and botrytised sweet wines, reaching celebrated expressions in Sauternes and Barsac while producing distinctive, long-lived dry wines in Australia’s Hunter Valley.

Sémillon is a white wine grape originating in Bordeaux, where it is central to both dry white blends and botrytised sweet wines. Its generous texture, affinity with noble rot and ability to develop considerable complexity through bottle ageing have established Sémillon as one of the most versatile white varieties in fine wine, with benchmark expressions found in Bordeaux and Australia’s Hunter Valley.

Quick Grape Facts

Grape Type: White wine grape
Origin: Bordeaux, France
Key Regions: Sauternes, Barsac, Graves, Pessac-Léognan and Hunter Valley
Primary Styles: Dry white wines, botrytised sweet wines and white blends
Common Blending Partners: Sauvignon Blanc and Muscadelle
Typical Aromas: Lemon, green apple, pear, beeswax, honey, apricot, toast and nuts
Structure: Generally medium to full-bodied, with acidity and concentration varying according to climate, harvest timing and wine style
Botrytis Susceptibility: High, supported by the grape’s relatively thin skins
Ageing Potential: High in leading Sauternes, Barsac and Hunter Valley expressions
Canonical Name: Sémillon
Alias: Semillon
Historical Labels: Hunter River Riesling, Shepherd’s Riesling, Hock, White Burgundy and Chablis

Regional Expressions and Wine Styles

In Sauternes and Barsac, Sémillon’s thin skins make it particularly receptive to Botrytis cinerea, or noble rot. Botrytis concentrates the grapes’ sugars, acidity and flavours, producing richly textured sweet wines with notes of honey, beeswax, apricot, candied citrus and saffron. Sauvignon Blanc commonly contributes freshness and aromatic lift, while Muscadelle may add floral complexity. In the dry white wines of Graves and Pessac-Léognan, Sémillon brings body, depth and ageing potential to blends with Sauvignon Blanc, developing waxy, toasted and nutty complexity as the wines mature.

In Australia’s Hunter Valley, Sémillon is typically harvested early at relatively low sugar levels and fermented in stainless steel with little or no oak influence. Young wines can appear light-bodied, restrained and citrus-driven, yet the finest examples evolve over decades to show lemon curd, toast, lanolin, honey and nuts. Sémillon is also produced as a varietal wine in the Barossa Valley and blended with Sauvignon Blanc in Margaret River. Historical Australian labels such as Hunter River Riesling do not indicate a relationship with Riesling and should be treated as former naming conventions rather than separate grapes or modern synonyms.