Step 1

In a mixing bowl, combine the butter and vegetable shortening, beat using an electric mixer until fluffy, 1 minute.

Step 2

Add in the instant coffee granules that you dissolved in the milk.

Step 3

Add in additional instant coffee granules, about 1 tsp at a time until you get your desired coffee flavor.

Step 4

Begin to add the powdered sugar, about 1 cup at a time, mixing by hand first, then with the electric mixer. Continue adding powdered sugar until the frosting tastes good to you, is well mixed, and pipe-able.