Start by freezing milk in ice cube tray. Take an ice cube tray and fill it with milk. Pop them in freezer for 2 to 3 hours or till they are completely frozen.
Now peel, deseed and chop chikoo. Add them to a blender.
Add in sugar.
Now remove the ice cube tray from the freezer and remove the milk cubes from it. Add them to the blender.
Now blend them to a very smooth shake.
Pour them into glasses and serve immediately. They will like a smooth and creamy shake just like you added ice cream in them.