White Bordeaux blends consists predominately of Semillon and Sauvignon Blanc, two grape varieties that are widely planted in Bordeaux.
Other minor allowed grape varieties are Sauvignon Gris, Muscadelle, Ugni Blanc, Colombard and Merlot Blanc. (Harding et al., 2023). In the contrast of wine blind tasting these would not be used to showcase a traditional or classic white Bordeaux blend.
In this article, we are going to focus on the flavour profile of Semillon, Sauvignon Blanc individually as well as blended, following a structure commonly used by wine institutions like Court of Master Sommeliers (COMS) and Wine & Spirit Education Trust (WSET). We will also compare it with other grape varieties and call out what makes white Bordeaux unique.
Appearance
- Medium to deep straw
- Bright not brilliant
- A high proportion of Semillon results in a more rose/ gold hue
- A high proportion of Sauvignon Blanc shows in more green reflection/ hue
- If heavy stains/ tears, it reflects alcohol level and potential use of oak
Aromas and flavours
Sauvignon blend only – “Just” ripe lemon & lime, lime cordial, grapefruit/ orange peel, green to yellow apples and grassy/ hay depending on oak usage can show a pronounced oily mouthfeel
Semillon and Sauvignon Blanc blend – All of the above plus quince, papaya, candlewax, lanolin, chamomile, dried floral notes and honey
Sweetness
Dry (especially if Sauvignon Blanc blended)
Acidity
Moderate (Semillon blend)
Moderate plus (Sauvignon Blanc)
Alcohol
Moderate to moderate plus (if oaked)
Body
Rounded waxy texture (Semillon only)
Noticeably fresher (Sauvignon Blanc blend)
Comparison to others
Sauvignon Blanc/ Semillon blend from Margret River: tendency of a riper fruit spectrum and more candied aroma e.g. cotton candy
Semillon from Hunter Valley: lighter body, lower alcohol levels (10.5% ABV), less common use of oak
Classic examples
- 100% Sauvignon Blanc – 2019 Doisy Daëne
- Semillon dominant blend – 2013 La Clarte de Haut Brion (except 2014)
- Equal Sauvignon Blanc and Semillon blend – 2017 Latour-Martillac
Stefan Neumann MS
Austrian born, London based Master Sommelier – I am passionate about wine and a strong believer that wine should connect people. Hence I have made it my mission to share my wine knowledge and experience with like-minded individuals who would like to be part of this journey.
References:
Harding, J., Robinson, J. and Thomas, T.Q. (2023) The Oxford Companion to Wine. Oxford: Oxford University Press.
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