Wash and make marks on the potatoes, microwave for 7 - 8 mins. Soak in water and peel the skin. Mash well using a fork.
Then, trim the sides of the bread, soak in water and squeeze away immediately.
In a bowl, take the mashed potatoes, bread, finely chopped chilies, cumin powder, coriander leaves, salt and mix well. Pinch into small balls, flatten them into small discs.
Heat a shallow pan with 1 tsp of cooking oil. When you are done making all the tikkis, transfer to a plate spread little chat masala on both sides, and shallow fry these on a hot pan.
Serve hot with Tomato Ketchup.