- Definition:Austrian wine category
The grapes must fulfil strict requirement and are classified according to their must weight. Spätlese has for example a minimum must weight of 19°KMW, Auslese (21°KMW), Strohwein (grapes dried on straw mats) Eiswein (ice wine) and Beerenauslese all require 25°KMW. Trockenbeerenauslese (including the speciality Ruster Ausbruch) requires at least 30°KMW. The residual sugar of these wines may only derive from the fermentation time, either by deliberatley arresting fermentation or through its natural end, and by no means may the wine be sweetened by Süssreserve (sweet grape must).