1. Soak Grewia Asiatica in sufficient water for 8 hours.
2. Grind the fruit and then strain out the juice.
3. Make sugar syrup by adding sugar in water.
4. Cook the sugar syrup mixture till sugar dissolves and starts to simmer.
5. Add grewia juice and sugar syrup in blender.
6. Then add ice, black pepper and sugar.
7. Blend them all well.
8. The drink is ready to be served.