In a bowl, add boiled potatoes, cooked matar and spices. Mix well.
Grind black grapes to a smooth paste. Pour ⅓ cup curd. Mix well.
Grind beetroot with a little water to a smooth paste. Pour ⅓ cup curd. Mix well.
Pour ⅓ cup curd to green chutney. Mix well.
Pour the turmeric mixture to ⅓ cup curd. Mix well.
Then take one golgappa, create a hole in the centre and fill it with the potato mixture. Repeat for the rest of the golgappas.
Pour the dahi. Add a drop of white dahi at the centre. Swirl with toothpick.
Garnish with chopped coriander and beetroot.
Serve them immediately.