https://www.amazon.com/NOW-MCT-100-Oil-32-Ounce/dp/B0019LRY8A

edit:

i did notice a difference when i was doing it. didn't feel the crash that you can sometimes get with caffeine.

also this is the butter i used:

http://www.igourmet.com/shoppe/Kerrygold-Pure-Irish-Butter.asp?src=froogle&gclid=Cj0KCQiAlpDQBRDmARIsAAW6-DM11pPcIP9J3oRIwoG3u5lSJyzy0kQbhuA_3umBcMmquaIY7TOtrd8aArguEALw_wcB

make sure you get unsalted grass fed butter.

i made my bulletproof with an aeropress.

i only really stopped because i missed the taste of coffee....i may start up again though.

the key to happiness is not being rich;
it's doing something arduous and
creating something of value and then
being able to reflect on the fruits of your labor