In a bowl, add the mashed potatoes, salt, turmeric powder, garam masala powder, chaat masala powder, green chilies, ginger, onion, and coriander leaves, and mix well until everything is well combined.
2 Potatoes, Salt, ¼ teaspoon Turmeric powder, ¼ to ½ teaspoon Garam masala powder, ¼ to ½ teaspoon Chaat masala powder, 2 to 3 Green chilies, 1 teaspoon Ginger, 1 Onion, 2 to 3 tablespoon Coriander leaves