On this week's Radio Spätkauf: Berlin city's scientists have warned Christmas market shoppers to beware of bad glühwein. After testing market stalls, they found 8.6 per cent of mulled wine is not what it purports to be. Jöran Mandik has dispatched his final audio architectural tour (sadly, he's moving to Australia in the new year). He takes us on a walk around the concrete monolith that is the International Congress Centrum, which will close its doors in mid-2014 for renovations, and may never reopen. We play some clips from the archives. Drinkers in a Neukölln pub attempt to define the difference between a döner and a schwarma. Our song of the week is another from Sean Nicholas Savage, a Berlin resident who channels 80s pop icons.