Reduce milk(add sugar) in a heavy bottom pan to thick batter consistency.
Add baking soda and mix well. The batter will become fluffy.
Switch off flame and add maida in small quantities.
Mix well till it becomes a soft dough.
Divide it into 20 equal pieces. Roll each piece to a smooth ball.
Heat oil on low flame. Deep fry the Jamuns till golden brown.
Meanwhile add sugar and water and bring to boil.
Add cardamom powder and let it boil till the syrup becomes sticky.
Switch off flame and add the fried Jamuns to the syrup.
Allow it to cool. Wait for 1 hour before you eat it.