Simon and Seafort's Irish Coffee Ingredients: Preheat a 7 oz. fizz glass with hot water. Mull 2 cubes sugar in the glass. Then pour in order: Rich strong coffee to 2/3 mark 1 oz. Murphy's Irish Whiskey Float fresh soft whipped cream Preparation: The liquor is always poured last to be sure the alcohol does not evaporate and the drink maintains its strength.