Two Los Angeles landmarks, Philippe The Original and Cole's Pacific Electric Buffet, claim to have invented the famed French dip sandwich, the former in 1918 and the latter in 1908. It traditionally features sliced roast beef on French bread with a side of savory meat juice for dipping. Referred to as " au jus," meaning "with juice," the dip comes from roast beef drippings, blended with butter, red wine, Worcestershire sauce, salt, and pepper.