Cumberland Sauce refers to a classic English sauce with a high fruit content made by combining red currant jelly, port wine, orange and lemon zest, mustard and seasonings. Cumberland Sauce is usually served cold to either hot or cold gammon, tongue, cold goose or game. It is also often serve as an accompaniment to meats, like ham, venison, or lamb. This sauce should not be thickened – it is meant to have a thinnish consistency.