2 teaspoons sugar
1 oz Irish whiskey
Brew your coffee. While the coffee is brewing, fill your mug with hot water and let stand.
Take your cream and whisk it a couple of times. And when I say "a couple of times" I mean it -- you just want the cream to thicken a bit.
Pour the water out of your mug and fill mug about 2/3's of the way with coffee. Add the sugar -- even if you don't drink coffee with sugar, add the sugar -- and the whiskey. Stir.
Now, hold your spoon about half an inch above the coffee, upside down. Slowly and gently pour the cream onto the spoon until you have about three-quarters of an inch of cream floating on the top of your coffee.
To drink, sip your coffee through the layer of cream.
Voila! Irish coffee.