For pudina pani, grind pudina leaves, coriander leaves, green chillies with lemon juice and required water and make paste. Add this paste into approximate 1-litre water. Then strain it and remove big particles. Add salt, black salt, chaat masala and mix well. Taste it and adjust masala. Pudina pani is ready.
Soak desi chana in water for 6-8 hours in hot water. Then cook in a pressure cooker with salt and soda bicarb. Then strain it and remove water. Boil potatoes too in pressure cooker and remove skin and mash them. Make paste of coriander leaves, pudina leaves, green chillies and amchur powder.(without water).
In a mixing bowl take boiled and mashed potatoes. Add boiled chana, salt, prepared paste, chaat masala. Mix well.
Make hole in between of puri. Stuff with aloo chana mixture. Pour pudina pani and enjoy. Pour date tamarind chutney too if you like.
