Brew two cups of coffee, using your usual method.
Stick the egg in a blender and whizz for a few seconds.
Add the reamining ingredients and the coffee and blend for 10-20 seconds until frothy.
NOTE: If you have a Nutribullet style blender, you need to follow a slightly different method as you cannot add hot coffee to a Nutribullet. To make Power Coffee in a Nutribullet, brew your coffee as usual, then melt the butter in a microwave. Blend the egg, cream, MCT oil, vanilla spice drops, and melted butter in your Nutribullet for 10-20 seconds. Then stir the mixture into your hot coffee.