Irish Whiskey Ingredients

How do you make Irish cream?
My mother used to, and I know it's the whiskey, coffee, sugar, and evaporated or condensed milk and cream I do not know how much or if any of the ingredients are right! I really would like to make 75 ml before tomorrow.
Irish coffee, the heat of a glass before adding a measure derived from Irish whiskey 1 teaspoon white sugar STIR, pour in hot coffee almost fill the glass, let the coffee STIR resolve, float 1 tablespoon fresh cream desert top NOT STIR drink coffee through the cream ENJOY
Making Kilbeggan Irish Whiskey