Take a ripe avocado slit and take out the seed,scoop out the pulp.
Add this pulp in a blender by adding milk and sugar.
Beat well and chill in fridge and serve.
Notes
Can use icecubes while blending itself or can add while serving.
If you want your milkshake to be thin then add more milk to dilute.
Even honey can be added instead of sugar.
Milkmaid can be substituted instead of sugar for more rich taste.