Firstly, in a pressure cooker, add roughly chopped potatoes and turmeric powder, and enough water to soak
Pressure cook for 2 whistles and let the pressure release naturally
Place the cooked potatoes in a colander and drain the water
Furthermore, run tap water to prevent further cooking
Let the water drain completely, and let the potatoes turn cold. Peel off the skin and cut the potatoes into bite-sized pieces
In a cast-iron skillet, add 1 tbsp of oil and let the oil turn hot
Add mustard seeds, channa dal, and curry leaves, and let them splutter
Turn down the flame to low-medium
Furthermore, add sambar powder and salt; give a quick mix
Add potatoes and mix well
Cook for a minute, mix well in between
Furthermore, add 1 tbsp of oil and mix well
Add besan flour and mix well
Finally, add a generous pinch of hing and cook for 20 minutes, sauteeing the potatoes once in a while for even roasting