Boil the potatoes and peel the skin,
In a nonstick pan, heat oil, add mustard, Urad, chana dal, saute for a minute.
Then add chopped green chilies, curry leaves, cashew nuts, combine everything well.
Add onions and let it get cooked till it changes colour.
Now add the besan over this and combine.
Next add red chili flakes, one half of a potato and mash well to form a paste.
Once it cooks for a minute, add the rest of the potatoes and saute well.
Add 2 cups of water and bring to a boil.
Serve with Pooris.