Take 1 liter full cream milk in a kadhai or pan. Boil it on high flame.
After a boil,turn the flame of the gas to medium and let it cook on low to medium flame. Stir often in between.
Stir and also scrap the malai formed on the sides and add it to the milk.
Once the milk reduces to less than half, add 1/2 cup sugar candy or 1/4 cup normal sugar. Mix and keep stirring so that it dissolves.
Once the sugar melts and milk has reduced more in quantity, stir the milk continuously.
The quantity will reduce and the color will change to slightly golden. Turn off the flame. Scrap the malai formed on sides and add it to the mixture. Let it cool.
After leaving for half an hour, the delicious Lacchedar Rabdi is ready.