Melt margarine, espresso, Kahlua and sugar in double boiler or microwave. Add chocolate and stir until melted. Beat in eggs one at a time. Pour into 20 cm cake pan that has been prepared with a piece of waxed paper cut to fit into the bottom. Grease sides and wax papered bottom. Place in baking pan and pour hot water halfway up the sides of the cake pan. Bake at 180ºC or 35 minutes. Chill minimum of 8 hours, or overnight. Unmold on platter. Serve with pureed strawberries, raspberries, or? ----