Sauvignon Blanc and Semillon have long been blended together, originating in Bordeaux of France in particular. A Bordeaux Blanc is simply a combination of the two. The French examples tend to be very subtle in flavour with lemon and herby characters making them very food friendly. The Sauvignon Blanc adds freshness, acidity and aromatics while the Semillon plumps up the wine. You can find SSB (Semillon Sauvignon Blanc) or SBS (Sauvignon Blanc Semillon) grapes in other parts of the world, particularly Margaret River here in Australia eg Forester Estate, Willow Bridge, Howard Park and more. New Zealand produces some fine examples too, far more pungent in style tasting of passionfruit and gooseberry. Even Cloudy Bay Sauvignon has a splash of Semillon inside!