Take 1/2 cup milk, add custard powder and mix well.

Boil the milk, add custard milk and suger.

After 5 minutes switch off the gas.

Cool the mixture.

Take 4 glasses, add custard milk and sat into freezer for 4-5 hours.

Take a jar, add Watermelon pieces, rock salt, mint leaves and lemon juice and bland.

Now add this mixture into custard milk glasses and sat into freezer for 4-5 hours.

Garnish with mint leaves and serve chilled.