Take 1 cup chickpeas. Soak chickpeas in water 7-8 hours. Wash and boil with 3 cups water,salt,ginger,garlic,haldi& 1-2 bay leaves. Now take oil in other pan add Jeeru (Cumin) ½ teaspoon, 2 stick cinnamons,2 slits green chilies and 1 medium size onion paste. Cook till onion goes lightly browned. Now add 3 boil and grated tomatoes. Now add ½ teaspoon chili powder,½ teaspoon haldi,½ teaspoon coriander powder,½ teaspoon Garam masala,1 ½ teaspoon Chana masala or chhole masala powder,¼ teaspoon chat masala & salt to taste now add some water and cook for 10 minutes.now add boiled and chopped potatoes and boiled chickpeas. Mix well cook another 5 minutes then add coriander leaves and serve with puri.