Soak few crystals of gond katira and sabja seeds in water overnight. (In different bowl) as shown below.

First take 2 glasses. Add half lime juice in each of the glasses. Then add black salt and salt in it.

Now add 2 tsp of sabja seeds in each glasses and 2 tsp of gond katira too. Add water & and give it a mix.

Then add jaggery powder as per your requirement. Now add 1 tsp of jaljeera powder too in each glasses.