Proceed according to the basic recipe, replacing the milk with coffee.If you wish you may serve the ice cream with hot chocolate sauce: serve up the ice cream and place in freezer. At the last possible minute before serving break up 120g of bitter bar chocolate and place it in a small saucepan with 2 tea spoon of water. Heat over a low flame or in a double boiler, stirring continuosly until the chocolate has melted: continuing to stir over a low flame, add 60g of cream a little at a time, blending in to achieve a smooth creamy consistency.Pour over the ice cream and serve immediately.