Sauvignon Blanc and Semillon - These varieties are commonly coined as white Bordeaux due to their tremendous success in the Bordeaux region of France. Sauvignon Blanc is a tart, dry, white with palate cleansing acidity. Semillion is commonly used as a blending wine however, it is good to remember that Sauternes, the most expensive dessert wines in the world are dependent on Semillons late harvest characteristics namely its susceptibility to botrytis.