See under grape.
Term (also wine grape) for those grapes from vines that are grown for the production of wine or spirits such as brandy(Armagnac, Cognac, Metaxa, etc.) and even vodka (together about 85% worldwide). Other groups include table grapes (edible grapes) and sultanas. There are about 8,000 to 10,000 different grape varieties worldwide, with the morphology(leaf shape as well as size, texture and colour of the grapes or berries) being characteristic of the respective variety. The vine develops the grape in the course of the annual vegetative cycle. As a rule, the grapes are harvested when they are as physiologically ripe as possible. For Prädikat wine types such as Spätlese, Beerenauslese, Trockenbeerenauslese or Eiswein, this takes place much later because a special grape condition is required for this. Especially in Austria and Germany, a certain degree of sugar in the grapes at harvest is an important criterion for the later wine quality level (see must weight).
Strictly speaking, the term "grape" is actually incorrect; a grape has only secondary stems without branches. The correct botanical term would be panicle. Grapes belong to the so-called non-climacteric fruits, which means that they do not ripen after harvesting. The size, the number of berries and the weight of a grape, as well as the number of grapes and, derived from this, the yield per vine vary and depend on the grape variety, pruning, vine training, weather conditions, wine quality and wine type (see relevant formula under yield). In a study conducted over several years, researchers at the Weinsberg Viticultural Institute determined the average number of berries per grape of several classic grape varieties. The result: Silvaner 110, Spätburgunder/Pinot Noir 115, Riesling 120, Kerner 140, Müller-Thurgau 160, Trollinger/Schiava Grossa 155 and Lemberger/Blaufränkisch 190 berries. There was a considerable...
In the past, you needed a wealth of encyclopaedias and specialist literature to keep up to date in your vinophile professional life. Today, Wine lexicon from wein.plus is one of my best helpers and can rightly be called the "bible of wine knowledge".Prof. Dr. Walter Kutscher
Lehrgangsleiter Sommelierausbildung WIFI-Wien