The sidewalk vendors seem to be the best way to go for meals.  Today Jeremy had a bratwurst and brot  (two sausages in a bun) and I had a large pretzel and half cantelope full of fruit for about 6.50 euros, which is about 7 dollars.  Jeremy says hi.  Must go as others are waiting to use this computer.  It is the only one in the hotel but it is free!