Crack open the coconut, pour the water into a big bowl through a strainer and spoon out the meat. (I find it's better when you pour it out through a strainer since there are sometimes some loose pieces of the shell floating around.)
Wash the meat and make sure there aren't any pieces of the shell sticking to it.
Add everything into a high speed blender and blend till smooth.
Enjoy either in a glass or in a bowl topped with goji or other berries.