This idea has become all the rage and I have to admit, its one fad that is actually based on good science.
Why? ... As a PT I am always asked which energy drink is the best. The answer is simple...none of them.
They are all caffeine and sugar laden rubbish.
However caffeine has been scientifically proven to improve sports performance, insulin management and digestion (its one of the few bitter herbs we consume).
Butter is rich in CLA (a fat that helps you burn fat) and the fat contained is rich in butyric acid which is anti viral and anticancer. It also acts as a constituent of the fat which protects the myelin sheath in our brains (nerves are coated in fat, much like an electrical lead is protected in plastic - protect that and your "leads" don't fray...ie Alzheimers or other examples of cognitive decline)
Last in the mix: MCT oil. This is a fat derived from coconut oil and is much more liquid than its coconut cousin. It mixes better with coffee and is rich in a liver friendly fat is more readily used as fuel for exercise/life than stored around your belly.
Another benefit of adding these smart fats to your coffee is that they delay the uptake of caffeine giving you a sustained release of energy rather than a short sharp burst, leaving you craving more.
1 tablespoon of organic coffee per person (I use Cafe Directs Machu Picchu)
1 tablespoon of MCT oil (build up to 2, gradually!)
1 sliver of grass fed butter (unsalted)
I use Kerry Gold
Pop in a cafetiere, pour on boiling water, stir vigorously , steep for 5 minutes and enjoy!