Take 2 – 3 tablespoon of milk in a bowl, add custard powder, cardamom powder to the bowl and make a fine, lump free paste. Keep the paste aside.
Take remaining milk in a saucepan and bring it to a boil.
Reduce the flame, add some hot milk to custard paste, mix well and pour it back into hot pan of milk, stirring constantly.
Cook/simmer for few minutes until custard thickens and coats the back of the spoon.
Keeping aside a tablespoon of sugar, add sugar to custard and mix until it melts into custard.
When desired consistency is reached, turn off the flame. Mind you, custard thickens when it cools.
Tip – Sprinkle remaining one tablespoon of sugar on custard and let it cool. Sugar will melt and prevent the custard from forming a thick layer on the surface.
When custard is cool, refrigerate until ready to serve.