- Heat mustard oil in a pan, add chopped ginger, green chilies, curry leaves, hing and saute it. Add sweet corn, boiled and chopped potatoes, salt, toss it and turn off the flame. Now, add chopped onions, tomatoes, capsicum, coriander leaves, red chili powder, lemon juice, chaat masala,mix well and transfer to a plate. Top it with coriander leaves, tomato ketchup, curd, chat masala.