Sturm is a seasonal drink that is unique to Vienna and the surrounding wine regions. It is a young wine that is still fermenting and has a slightly fizzy texture. Sturm is made from freshly pressed grapes and is only available for a short period of time after the grape harvest. It has a sweet and fruity flavor, with hints of grape and apple. Sturm is typically enjoyed in the autumn months and is often served at wine taverns and festivals in Vienna.