Mix cornflour and milk powder in 1 cup milk and keep aside
Boil 1 ltr milk in a heavy bottom pan ..after the 1st boil put on low flame .Now add the cornflour paste and sugar and keep stirring contiuously to avoid getting lumps ..
Boil for 4-5 mins.Remove from fire and cool ..freeze it for 3-4 hours..Your base is ready.
Take the base an whisk it well with a beater..till it is fluffy and smooth..
Now add the mango pulp and essence and beat again for few mins..freeze it till done ....Serve chilled