Wikipedia
Trockenbeerenauslese (literal meaning: "dried berries selection") is a German language wine term for a medium to full body dessert wine.
Trockenbeerenauslese is the highest in sugar content in the Prädikatswein category of the Austrian and German wine classifications. Trockenbeerenauslese wines, often called "TBA" for short, are made from individually selected grapes affected by noble rot, i.e. " botrytized" grapes.
This means that the grapes have been individually picked and are shrivelled with noble rot, often to the point of appearing like a raisin. They are therefore very sweet and have an intensely rich flavor, frequently with a lot of caramel and honey bouquet, stone fruit notes such as apricot, and distinctive aroma of the noble rot. The finest examples are made from the Riesling grape, as this retains plenty of acidity even at the extreme ripeness. Other grape varieties are also used, such as Scheurebe, Ortega, Welschriesling, Chardonnay, and'' Gewürztraminer'' and many are more prone to noble rot than Riesling since they ripen earlier.
These wines are rare and expensive due to the labor-intensive method of production, and the fact that very specific climatic conditions (which do not necessarily occur every year) are required to create botrytized grapes. Some of the best wines of this type are sold almost exclusively at the various German wine auctions. They are usually golden to deep golden in colour, sometimes even dark caramel. The body is viscous, very thick and concentrated, and arguably can be aged almost indefinitely due to the preservative powers of its high sugar content. Although TBA has very high residual sugar level, the finest specimens are far from being cloying due to high level of acidity.
Trockenbeerenauslesen have also been in common production since the 1960s in Austria. Most TBA wines from Austria come from Neusiedlersee, Burgenland. On both sides of lake Neusiedl those wines are produced. East of the lake, the village of Illmitz is known for the production of "liquid gold". At the western side of the lake in Rust and St. Margarethen, wine of exceptionally good quality can be found. This region is known for its wide and shallow lakes which can lose more than half their volume due to evaporation. The mists created by these lakes provide a very conducive climate for Noble Rot to shrivel grapes.
The style is similar to, but much more concentrated than, Sélection de Grains Nobles from Alsace.
In comparison to Sauternes, the wines are considerably sweeter, have a lower alcoholic strength and are usually not oaked.
As with most other premium grade dessert wines, Trockenbeerenauslese is to a large extent sold in half bottles of 375 ml.