White wine the death knell of northern viticulture. The vine disappeared from northern Germany and Baden, and the maximum altitude for viticulture descended to 220 metres. Hans-Jürgen Otto noted that: "all the vineyards suffered and decreased in area". In England the vine also disappeared. The less early vineyards preferred to select white varieties of grapes because, even if unripe, white grapes allowed wine that was a little sour to still be consumable, while red grapes do not give enough colour and green tannins make the wine bitter. The interruption of the fermentation by a cold winter led to the discovery of the
Cotton Candy grapes Cotton Candy grapes Cotton Candy grapes are a variety of grapes produced in California by Grapery, which became available for consumers to buy in 2011. Grapery was founded by Jack Pandol and is owned by him and Jim Beagle. At International Fruit Genetics, fruit geneticist David Cain developed their patented Cotton Candy grapes and other varieties by using hand-pollination to cross pollinate millions of grapes to develop the desirable varieties. Experiments were done to try to combine concord grapes, known for their flavor, with Vitis vinifera in order to make them firm. A hundred thousand plants were created and grown