Dry roast the peanuts and keep aside.Take a heavy-bottomed pan on medium flame, and add some water in it. Add jaggery to this pan and stir it with a spoon or spatula until jaggery gets entirely dissolved.
Let the jaggery syrup simmer on medium flame, while stirring it frequently. Keep on mixing till the small bubbles appear and it reaches the hard ball stage. Reduce the flame then.

Now add the peanuts and cardamoms into the pan and remove it from flame. Let this mix cool down a little. Till then, grease a tray or plate with some ghee.

Once cooled keep them on the greased plate or tray to cool down further and harden up.