Potatoes - 2, boiled, peeled and mashed
Green chillies - 1 tbsp, chopped
Coriander leaves - 2 tbsp, chopped
Ginger - 2 tsp, chopped
Chilli powder - 1/2 to 1 tsp
Chaat masala - 1/2 tsp
Garam masala - 1/2 tsp
Cornflour - 2 tbsp
Salt - to taste
Oil - to shallow fry
1) Mix all the ingredients above (except oil). Divide this into several portions. and shape each portion into a tikki.
2) Shallow fry these (or deep fry, if you so prefer) until golden brown on either side. Serve with ketchup.