The stew's dark, slightly sweet sauce often gets a slice of gingerbread spread with mustard stirred right into the pot, where it melts to thicken and sweeten the braise.
Chunks of beef are browned and then braised for hours in dark Flemish beer with onions, brown sugar, and a slice of spiced gingerbread, until the meat falls apart in a thick, sweet-savory sauce. Estaminets — traditional Flemish taverns — in Lille serve it with a side of frites.