Carefully peel orange such that the peel comes off in one long spiral and set aside. Put the brandy, cloves and sugar into a chaffing dish and heat slowly. Grasp the orange peel by one end (in your left hand if you are right handed), and hold it above the chaffing dish such that the other end just touches the brandy. Using a ladle (with the other hand), scoop up some brandy, and light it from the flame below the chaffing dish. Pour the now flaming brandy gently down the orange peel as close to the top as possible. Be careful not to let any of the flaming brandy splash about. Repeat this process several times. Carefully set the orange peel aside onto a non-flammable surface. Slowly pour the coffee into the chaffing dish to extinguish the flames. Serve to guests in elegant coffee mugs.