Doing this the traditional way will take about an hour or so to get a cup of thiratti paal! But, thanks to today's technology and microwaves, this takes about 12 mins or a little more. I cannot single out the differences in both - they both taste divine.
To start with, add one can or two cans of sweetened condensed milk to a microwave safe bowl. I strongly recommend you to go with a glass bowl and not a plastic bowl - you don't want to heat up anything in plastic for a long time.
For each can of condensed milk, add 2 tbsp of milk and 2 tbsp of fresh curds in the bowl.
Mix well until all the curds and milk are combined with the condensed milk.
Move the bowl to the microwave and heat on high for about 4 mins. Take it out and stir well. Add a tbsp of ghee at this point.
Move back to the microwave and keep heating in intervals of 2 mins. After every 2 mins, take it out and stir it up well.
I have added pictures in each stage. Initially, you will notice all the water separating from the milk. As you keep heating, this will evaporate a little bit and get pulled back in a little bit.
The ghee will also separate initially but by the end, it will all be combined well.
When it starts combining together, add a pinch of cardamom powder for flavor.
This is done here below. I kind of lost track of the exact number of minutes I microwaved this - but I think its about 14-16 mins. This might vary depending upon your microwave power levels.
Serve hot or cold - either way its not going to last for a long time! Enjoy!