Wine from the United Kingdom Normans, with over 40 vineyards in England mentioned in the Domesday Book, although much of what was being produced was for making communion wine for the Eucharist. From the Middle Ages, the English market was the main customer of clarets from Bordeaux, France, helped by the Plantagenet kingdom, which included England and large provinces in France. In the 18th century, the Methuen Treaty of 1703 imposed high duties on French wine. This led to the English becoming a main consumer of sweet fortified wines like sherry, port wine, and Madeira wine from Spain and Portugal. Fortified wine became popular because
Sauvignon blanc to form a tart white wine. In the Sauternes region, the grape is blended with Sémillon to make the late harvest wine, "Sauternes". The composition of Sauvignon blanc varies from producer and can range from 5-50% with the "Premier Cru Supérieur" Château d'Yquem using 20%. A traditional practice often employed in Sauternes is to plant one Sauvignon Blanc vine at regular intervals among rows of Sémillon. However, Sauvignon blanc's propensity to ripen 1–2 weeks earlier can lead the grapes to lose some of their intensity and aroma as they hang longer on the vine. This has prompted more producers to