Icewine is a type of dessert wine produced from grapes that have been frozen while still on the vine. The sugars and other dissolved solids do not freeze, but the water does, allowing for a more concentrated grape juice to develop. The grapes' must is then pressed from the frozen grapes, resulting in a smaller amount of more concentrated, very sweet juice. With icewines, the freezing happens before the fermentation, not afterwards. Unlike the grapes from which other dessert wines are made, such as Sauternes, Tokaji, or Trockenbeerenauslese, icewine grapes should not be affected by Botrytis cinerea or noble rot, at least not to any great degree. Only healthy grapes keep in good shape until the opportunity arises for an icewine harvest, which in extreme cases can occur after the New Year, on a northern hemisphere calendar. This gives icewine its characteristic refreshing sweetness balanced by high acidity. When the grapes are free of Botrytis, they are said to come in "clean". This results in a very complex and sweet wine. Much icewine is made from the grapes Riesling, Vidal, Cabernet Franc and Cabernet Sauvignon, but there is also icewine made from Shiraz, Merlot, Sangiovese and others.
Noble rot is the beneficial form of a grey fungus, Botrytis cinerea, affecting wine grapes. Infestation by Botrytis requires warm and humid conditions, typically around 20 degrees celcius and above 80% humidity. If the weather stays wet, the undesirable form, "bunch rot" or "grey rot", adversely affects winemaking by disrupting fermentation and changing the taste, aroma, and appearance of the final wine Grapes typically become infected with Botrytis when they are ripe. If they are then exposed to drier conditions and become partially raisined, this form of infection is known as noble rot. Grapes picked at a certain point during infestation can produce particularly fine and concentrated sweet wine. Wines produced by this method are known as botrytized wines, and are considered a distinct category of dessert wines.
Late harvest wine is wine made from grapes left on the vine longer than usual. Late harvest is usually an indication of a sweet dessert wine, such as late harvest Riesling. Late harvest grapes are often more similar to raisins, but have been naturally dehydrated while on the vine.
Beerenauslese is a German language wine term for a late harvest wine with noble rot. Beerenauslese is a category in the Prädikatswein category of the Austrian and German wine classifications, and is a category above Auslese. Beerenauslese wines, often called "BA" for short, are usually made from grapes affected by noble rot, that is "botrytized" grapes.
German wine is primarily produced in the west of Germany, along the river Rhine and its tributaries, with the oldest plantations going back to the Roman era. Approximately 60 percent of German wine is produced in the state of Rhineland-Palatinate, where 6 of the 13 regions (Anbaugebiete) for quality wine are situated. Germany has about 103,000 hectares of vineyard, which is around one tenth of the vineyard surface in Spain, France or Italy. The total wine production is usually around 10 million hectoliters annually, corresponding to 1.3 billion bottles, which places Germany as the eighth-largest wine-producing country in the world. White wine accounts for almost two thirds of the total production.
The German wine classification system puts a strong emphasis on standardization and factual completeness, and was first implemented by the German Wine Law of 1971. Nearly all of Germany's vineyards are delineated and registered as one of approximately 2,600 Einzellagen, and the produce from any vineyard can be used to make German wine at any quality level, as long as the must weight of the grapes reaches the designated minimum level. As the current German system does not classify vineyards by quality, the measure of wine ’quality’ is the ripeness of the grapes alone.
Kabinett, or sometimes Kabinettwein, is a German language wine term for a wine which is made from fully ripened grapes of the main harvest, typically picked in September, and are usually made in a light style. In the German wine classification system, Kabinett is the lowest level of Prädikatswein, lower in ripeness than Spätlese.
Spätlese is a German wine term for a wine from fully ripe grapes, the lightest of the late harvest wines. Spätlese is a riper category than Kabinett in the Prädikatswein category of the German wine classification and is the lowest level of Prädikatswein in Austria, where Kabinett is classified in another way. In both cases, Spätlese is below Auslese in terms of ripeness. The grapes are picked at least seven days after normal harvest, so they are riper and have a higher sugar content. Because of the weather, waiting to pick the grapes later carries a risk of the crop being ruined by rain. However, in warm years and from good sites much of the harvest will reach Spätlese level.
Auslese is a German language wine term for a late harvest wine and is a riper category than Spätlese in the Prädikatswein category of the Austrian and German wine classification.
The subjective sweetness of a wine is determined by the interaction of several factors, including the amount of sugar in the wine, but also the relative levels of alcohol, acids, and tannins. Sugars and alcohol enhance a wine's sweetness, while acids cause sourness and bitter tannins cause bitterness. These principles are outlined in the 1987 work by Émile Peynaud, The Taste of Wine.
Alsace wine or Alsatian wine is produced in the Alsace region in France and is primarily white wine. Because of its Germanic influence, it is the only Appellation d'Origine Contrôlée region in France to produce mostly varietal wines, typically from similar grape varieties to those used in German wine. Along with Austria and Germany, it produces some of the most noted dry Rieslings in the world as well as highly aromatic Gewürztraminer wines. Wines are produced under three different AOCs: Alsace AOC for white, rosé and red wines, Alsace Grand Cru AOC for white wines from certain classified vineyards and Crémant d'Alsace AOC for sparkling wines. Both dry and sweet white wines are produced.
Vendange tardive ("VT") means "late harvest" in French. The phrase refers to a style of dessert wine where the grapes are allowed to hang on the vine until they start to dehydrate. This process, called passerillage, concentrates the sugars in the juice and changes the flavours within it. The name is sometimes written as the plural form, vendanges tardives, referring to the fact that several runs through the vineyard are often necessary to produce such wines. In other countries such as Germany or Austria the term Spätlese is used to describe wine using the same making process.
The Oechsle scale is a hydrometer scale measuring the density of grape must, which is an indication of grape ripeness and sugar content used in wine-making. It is named for Ferdinand Oechsle (1774–1852) and it is widely used in the German, Swiss and Luxembourgish wine-making industries. On the Oechsle scale, one degree Oechsle (°Oe) corresponds to one gram of the difference between the mass of one litre of must at 20 °C and 1 kg. For example, must with a specific mass of 1084 grams per litre has 84 °Oe.
The glossary of wine terms lists the definitions of many general terms used within the wine industry. For terms specific to viticulture, winemaking, grape varieties, and wine tasting, see the topic specific list in the "See also" section below.
Rheinhessen is the largest of 13 German wine regions (Weinanbaugebiete) for quality wines with 26,758 hectares under cultivation in 2018. Named for the traditional region of Rhenish Hesse, it lies on the left bank of the Rhine between Worms and Bingen in the federal state of Rhineland-Palatinate. Despite its historic name it is currently no longer part of the federal-state of Hesse, this being the case since the end of World War II. There have been several unsuccessful attempts to legally reunite the former wine growing districts of Mainz on the Hessian side during the post-war area. Rheinhessen produces mostly white wine from a variety of grapes, particularly Riesling, Müller-Thurgau and Silvaner, and is best known as the home of Liebfraumilch, although some previously underrated Rieslings are also made, increasingly in a powerful dry style.
A number of German wine auctions are held each year, where the premier German wine producers auction off some of the best young wines, as well as some older wines. Most auctions are arranged by the regional associations of Verband Deutscher Prädikatsweingüter (VDP). These auctions differ from wine auctions on the second-hand market held by auction houses, where collectible wines are sold by private or corporate owners, since it is "first hand" wines that are sold.
Nahe is a region (Anbaugebiet) for quality wine in Germany, along the River Nahe in the state of Rhineland-Palatinate. On the region's 4,155 hectares of vineyards in 2008, white wine grapes dominate with 75% and Riesling is the most common variety with 27.2%. A characteristic of the Nahe region is that the soils are very varied owing to the region's volcanic origins.
Slovak wine is produced in the southern part of Slovakia, which is divided into 6 wine-producing areas. Although Slovak wines except Tokaj are not well-known internationally, they are popular domestically and in neighbouring countries. The best wines are produced by medium-sized wineries with their own vineyards, with white wine production being most dominant, including the full range of historic sweet wines – ice wine, straw wine, and botrytized wine.
The 1985 Austrian diethylene glycol wine scandal was an incident in which several Austrian wineries illegally adulterated their wines using the toxic substance diethylene glycol to make the wines taste sweeter and more full-bodied in the style of late harvest wines. Many of these Austrian wines were exported to West Germany, some of them in bulk to be bottled at large-scale West German bottling facilities. At these facilities, some Austrian wines were illegally blended into German wines by the importers, resulting in diethylene glycol ending up in some bulk-bottled West German wines.
