Peel 4 potatoes and cut them.
Heat 4 tablespoon oil in a pan.
Add 1 dried red chilli and 1/2 teaspoon cumin seeds .
Then add chopped potatoes and onion.
Add 1 teaspoon turmeric powder and salt as per taste.
Mix everything very well.
Cover it with lid and cook for 10 minutes.
After 10 minutes open lid and fry very well.
Serve potato onion fry.