I am currently in Hamburg for the weekend. My friend Lazy Seal says currywurst from Mö Grill is the best in Hamburg. Mö Grill is located in the city center. There are two across of each other.
Currywurst is a sausage cut in pieces covered with curry sauce and curry powder. Including a bread and soda if you get the menu. It’s my favourite wurst to eat when I am in Germany.