There's this restaurant called Gourmet Haus Staudt near the office that I enjoy going to with my coworkers. I have found that in addition to delicious sausages, I am a very big fan of their Leberkäse with egg. It's essentially a pork meatloaf that tastes like a hot dog.
You should go try it some time. Mustard and sauerkraut really tie it all together with a 0,3L beer.