Cold roast beef should be cut in slices, the gravy brought to boiling-point, and each slice dipped in just long enough to heat, as stewing in the gravy toughens it. Rare mutton is treated in the same way, but is nicer warmed in a chafing-dish at table, adding a tablespoonful of currant jelly and one of wine to the gravy. Venison is served in the same manner. Veal and pork can cook in the gravy without toughening, and so with turkey and chicken. Cold duck or game is very nice warmed in the same way as mutton, the bones in all cases being reserved for stock.