For the liquid part, i used about half a tin of sweetened condensed milk along with 800ml of milk. Check the sweetness and add more or less condensed milk. I didn’t add sugar.
You can replace cardamom with a pinch of saffron if desired. Saffron will give a nice appealing yellow color and an authentic aroma to the rasmalai.
From my experience i feel nido milk powder works best compared to any other brand of milk powder.