"Currywurst is a German dish consisting of hot pork sausage (German: wurst) cut into slices and seasoned with curry sauce (regularly consisting of ketchup or tomato paste blended with curry) and generous amounts of curry powder, or a ready-made ketchup-based sauce seasoned with curry and other spices. Currywurst is often sold as a take-out/take-away food, Schnell-Imbisse, at diners or "greasy spoons," on children's menus in restaurants, or as a street food.
Usually served with French fries or bread rolls, it is particularly popular in the metropolitan areas of the Ruhr Area, Berlin, and Hamburg. Considerable variation both in the type of sausage used and the ingredients of the sauce occurs between these areas, and there are disputes over where currywurst was originally invented and which version is the best. Sometimes currywurst is sold in food booth with a machine that will slice and spice with sausage. It is also sold as a supermarket-shelf product to prepare at home."
It turns out that curry ketchup can be attained in Redwood City, so tyrsalvia and I had currywurst for lunch, which made us both rather nostalgic for quick lunches at the Hauptbahnhof. I see little chance that we'll be able to afford 24C3 this year, but I'm definitely going back for 25C3 in 2008.
The currywurst was, by the way, delicious.