Thick cold Chocolate Milk shake

Take full fat milk in a saucepan. Add cocoa powder into it. Mix it with whisker.

Boil it at low flame. Now add chocolate, cornflour slurry (cornflour+water) and mix it Continuously.

Now mixture becomes thick. Once it becomes thick switch off the flame.

Add pinch of salt and cool it and keep it in refrigerator.

Garnish it with some chopped chocolates or cream