First in a large thick bottomed pan heat milk. Heat the milk on medium flame and keep stirring occasionally. Boil the milk and reduce it to half. Also keep stirring in between till the milk reduces and thickens completely.
Now in a cup take 2 tsp of lemon juice. Pour the lemon juice in the milk keeping on low flame. Keep stirring.
Furthermore, simmer for 2 minutes without stirring. Stir and allow the milk to curdle.
now add sugar. Stir continuously and dissolve the sugar well. keeping the flame on low as the milk splutters. milk thickens and turns slightly golden brown. Also the milk mixture starts to separate pan.
Now add cardamom powder and mix well. Transfer the milk mixture to greased vessel. Cover in towel and
allow to cool in 12 hours or till they cool completely.
Once it is cooled completely, separate the sides with the knife.
reverse and unmould the cake. Cut the pieces or garnish almonds or pistachois and serve this to your loved one or kids.