Coffee Butter Frosting
1 stick butter, softened but not melted
2 tablespoons very strong coffee
1 teaspoon vanilla
4 cups powdered sugar (more or less, to taste)
Whip butter until fluffy. Add vanilla, coffee, and a small amount of powdered sugar, mixing as you go. Slowly stir in more powdered sugar. Beat frosting, adding powdered sugar until desired thickness is reached. This may require more or less powdered sugar (if a lighter thinner frosting is desired, you'll use less; if thicker, more).
First things first, whip the butter until it's reached a nice, fluffy texture.
Add coffee, vanilla and a little powdered sugar.
Continue adding powdered sugar until reaching the desired consistency.
If you have a hard time picturing the way frosting will work with your cake, lift the beaters and watch it fall from them. It will spread, and drip from your cake if too thin, with whatever ease (or lack thereof) that you witness. Adjust powdered sugar as required based on that. :)
This is a perfect frosting for the Mocha Cake.