Heat oil in the pan.
Add cumin seeds followed by chopped green chillies and chopped ginger.
Fry them for a minute and add cumin powder, coriander powder, red chilli powder and salt.
Mix well, add 3-4 tablespoon of water to prevent masala from burning.
Add boiled and cubed potatoes and coat well with masala. Add few more tablespoon of masala if required.
Cook for 2-3 more minutes and before serving add toasted sesame, chopped green chilli, coriander leaves and serve hot.
You can serve them on their own or as a side dish with rice, dal , chapati. Masala aloo taste delicious any which way.