Boil the potatoes and green gram. Peel and mash the potatoes coarsely. Add Salt, chopped cilantro leaves and chili powder to taste. Mix well and set aside.
Making Pani For Pani Puri
To make pudinawali pani, take green chilies, small piece of jaggery, cumin seeds in a mixer jar.
Add washed cilantro leaves and mint leaves to the mixer jar. Grind well to a smooth paste. Add black salt and chaat powder and mix well. Set aside. add 2 1/2 cups of water and mix well.
Making Pani Puri
Keep the other ingredients like sweet chutney, sev, bhoondi and chopped onions ready.
Take 5-6 puris in a plate. Make a hole on the center with your thumb. Add some mashed potato mixture. Top with sweet chutney, sev and onions.
Add some bhoondi to the prepared pani. Add some prepared pani or dip the assembled puri in a small bowl of pani. Serve pani puri immediately.
Notes
1. You can use white chickpeas instead of green gram. 2. Adjust the quantity of ingredients in pani as per taste.