My cup is not a coffee mug in any way, shape, or form. My cup is a tall, non-disposable plastic glass. I fill it just a tiny bit with hot water, add about a teaspoon or so of instant coffee, then some creamer (almost any flavor will do), then fill the rest with cold milk, ending with a stir. If I am out of creamer, I can use ice cream If I have some, and if I'm out of Milk, I just use hot water, and increase the amount of creamer. If I'm out of instant coffee... well, I'm screwed.