Take 1/2 cup powdered jaggery in a pan with 1/4 cup of water. Melt it and strain. The syrup doesn't need to be thickened.
Making chakka varattiyathu
In a heavy-bottomed pan, heat the jaggery syrup. When it starts bubbling, add the jackfruit puree.
Whisk it thoroughly so the puree mixes with the syrup. Let it cook in a slow flame.
You need to stir it frequently so it doesn’t stick to the bottom of the pan.
Once the jackfruit preserve comes into one solid (it takes 15 to 20 minutes for the given measurements), add ghee. Let it cook for a few minutes more. Switch off the flame.
Once it cools down, store it in an air-tight container. Use only a fresh and dry spoon.
Notes
Adjust the powdered jaggery as per the sweetness of the jackfruit.