Keep milk for boiling on heavy bottom vessel on medium heat.

When milk starts boiling remove 1/2 cup milk from it. Let it cool.

When milk cools completely add custard powder in it and make a lump-free batter.

Boil left over milk for 5-7 minutes. With stiring. Add custard batter slowly and stir with one hand. add sugar in it.

Stir constantly for more 2-3 minutes. When batter becomes thicker off the flame.

Let it cool. Keep it in refrigerator for cooling.

Peel the mango and cut it into cubes.

Serve it very cold. Garnished with pistachios.