Rinderroulade is a traditional German beef dish that is popular in Berlin. It consists of thinly sliced beef that is rolled up with a filling of bacon, onions, and pickles. The rolls are then braised until the meat is tender and the flavors have melded together. Rinderroulade is typically served with a rich gravy and a side of potatoes or red cabbage. It is a delicious and comforting meat dish that is perfect for a hearty meal.