Giant Riesenbovist mushrooms, colourful Kurbis (pumpkins), and sweet Sturm made from fermenting grape must are the seasonal highlights this weekend's market. Sturm (also spelled Storm) is made from grapes picked in Austria and is named after its swirling, cloudy appearance. As well as the autumn storms that typically signal its arrival. This year Storm Boris flooded the Danube valley before the grape harvest was complete. Sturm is so volatile that bottles of it are sold without lids, so as to allow the gases to escape, and its alcohol content can vary from one to around ten percent. A fellow shopper asks the stall holder in earnest if there will be more Sturm next weekend. He responds it is likely, but stops short of offering a guarantee. By next weekend will the Sturm already be wine?