Avocado Shake

I have a quick and easy recipe for you today. My friend posted a photo yesterday of an avocado shake she had at a restaurant, and it looked so good. It made me want one. I have seen them before at bubble tea places and some Vietnamese restaurants, but never tried it. I did a bit of research on it and apparently the literal translation of its Vietnamese name-Sinh tố bơ-  means " butter fruit smoothie". It is really thick, creamy and delicious...