If using Milk, In a heavy bottom, pan add milk and let it come to a boil.
Once it starts boiling, on slow let the milk simmer for 10 minutes.
The milk should be thickened and reduce slightly.
In the meantime, peel and grate the dudhi. I have used a thick cut grater to grate the dudhi.
In a thick pot or Kadai (wok) add ghee.
Once hot add the dudhi and cook on medium for around 4-5 minutes until it becomes a bit soft.
Add the reduced milk or the evaporated milk to the dudhi and let the dudhi cook along with milk on slow.
Keep stirring the mixture until it reduces and the milk is almost evaporated.
Now add the sugar and cook again on slow.
The sugar will melt and the mixture would be watery again.
Cook again, stirring continuously until the sugar has completely mixed into it and the mixture is not watery.
Switch off, and add the cardamom powder and Chopped Nuts.
It’s ready. Serve it hot or cold as you like.