Cut 500 grams or 4 medium size potatoes into medium thick and round katli.
Wash batata katli with water and dry it.
Now in a bowl, add turmeric powder, coriander powder, Kashmiri red chili powder, black pepper powder, dry mango powder, kasuri methi, chaat masala, and garam masala. Mix well. Masala is ready.
Then in a pan, add some oil and fry katli on medium heat till it becomes slightly golden brown and cooked at 80%. Take out fry batata katli and keep it aside.
Now, in the same pan, add 3 tbsp oil, mustard seeds, cumin seeds, fennel seeds, things, and curry leaves. Saute it.
Then add fried batata katli and mix well.
Now add prepared masala, salt, and some coriander leaves. Mix well.
Cover and cook sabzi on low flame for 5-6 minutes so masala is absorbed in it.
Serve batata katli sabzi with rankali and sambharo.