Soak the white sesame for 15 - 30 minutes. Rinse and drain the water.
Grind the sesame and coconut with 1 ½ cup of water to a coarse consistency.
Strain and collect the liquid with a strainer. Repeat this procedure once more to extract all juice out of the sesame. (Add 1 cup of water to the sesame paste, when you strain for the second time)
Blend the jaggery with ½ cup water and mix it with the sesame-coconut concentrate.
Add cardamom powder and mix well.
Notes
You can use sugar, brown sugar instead of jaggery. But add as per your preference.