Coffee roast beef, a pleasantly unusual recipe, is essentially roasted beef in coffee gravy. Consumed as a main course item, coffee roast beef is prepared by cutting slits into roast beef , stuffing it with onion and garlic filling, marinating it in vinegar, refrigerating it overnight , browning it in an oven the next morning and then slow cooking it in coffee in a pot for about six hours. The lengthy and laborious preparation is well paid off when the novel coffee roast beef is served and tasted.