Take 1½ pounds of potatoes (boiled), then first peel, and then mash them.
To the mashed potatoes, add 1½ teaspoon of salt, and mix it in. Set aside.
Then in a tadka pan, add 1 tablespoon of oil, and lightly heat it up.
To the oil, now add 1 teaspoon of mustard seeds, and let it lightly roast for a few seconds, till it starts to crackle & pop.
Then add 16 curry leaves & 4 chopped green chillies, and lightly roast them for a few seconds.
After which add in chopped garlic (from 16 cloves), and lightly roast for 2-3 minutes, till they start to change color.
Finally add in the spice powders (preferably all together, to avoid them from burning) - ½ teaspoon of garam masala powder, ½ teaspoon of coriander powder, ¼ teaspoon of cumin powder, ¼ teaspoon of red chilli powder, and ¼ teaspoon of turmeric powder.
Lightly roast the spices for a few seconds (ensuring to not let them burn) and then turn off the flame. The tadka is ready.
Add this tadka to the mashed potatoes, and mix it in.
Then finally add ⅓ cup of chopped coriander to the potatoes, and mix everything together to make the potato masala.
Shape the potato masala into balls. You should be able to get 18 mid sized dough balls.