Roulaen (or Rinderroulade) is a German roulade consisting of semi-cooked bacon and onions wrapped in thinly sliced meat then cooked. Various different recipes can be found on the Internet. "Beef shank" is the obvious choice of beef due to its low cost and good flavour. The "rouladen" are slow roasted with carrots, celery and leeks until the meat is tender and nicely caramelized. The "Rouladen" are then removed, the pan de-glaced with some red wine and vegetable stock. This is reduced until a nice sauce consistency has been achieved. More details are below: