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
Sauternes (wine) white grape varieties. They introduced to the region German white wine making techniques, such as halting fermentation with the use of sulphur in order to maintain residual sugar levels. One of these techniques involved taking a candle (known as a "brimstone candle") with its wick dipped in the sulphur and burned in the barrel that the wine will be fermenting in. This would leave a presence of sulphur in the barrel that the wine would slowly interact with as it was fermenting. Being an anti-microbial agent, sulphur stuns the yeast that stimulates fermentation, eventually bringing it to a halt with