This is a perfect punch of a party during hot weater Mix coffee, milk, and one cup sugar the day before the party. Refrigerate. At party time, place ice cream in a pretty punch bowl and pour coffee mixture over. Whip cream and flavor with vanilla and 3 tablespoons sugar. Float this mixture on top of punch. Sprinkle grated chocolate over all. The chocolate may be grated the day before, wrapped in plastic wrap and refrigerated.