Boil rice with adding water and sugar till over-cooked and water evaporates completely…it should be sticky.
Add milk and few drops of vanilla essence. mix properly and let rice cool down. keep it aside.
Now in a bowl add flour, cocoa powder , sugar , a pinch of baking powder and water to make a thin batter. Now make thin crepes of this batter. keep aside.
Finally to assemble, spread cling film on a plate. First keep crepe on it.
Arrange medium thin layer of rice on it …dip your fingers in water to avoid sticking. On top arrange mango slices .
Roll carefully But tightly the cling film. Now keep ready cling film's in fridge for 20 minutes to set Now cut sushi rolls of 2 inches each with a very sharp knife.
Serve immediately.