Salt and pepper the roulades and brush with the cream horseradish. Spread the smoked pork belly and sliced onion evenly on the meat. Now roll up the roulades and wrap them with a thread. Turn in flour and fry in oil or frying fat. Deglaze the roast with 1/2 liter of beef stock.
Dissolve the gingerbread sauce in a little cold water, add the cream and a little cream horseradish, strain through a sieve and pour over the meat. Extend the sauce with a little meat stock. Cover and cook in the oven for approx. 1 1/2 hours.