Take the red poha in a vessel. Sprinkle water so much so that it gets soaked. Alternately, you can soak them in water till soft and then throw out the access water.
Heat oil in a wok. Add in the mustard and cumin till it sputters, followed by green chilies. Then add in the peanuts and roast them.
Now add in the finely chopped onion till it turns slightly pink. Then add in the potato and let it cook, till done. Then add in the turmeric and salt.
Once the potato is cooked, add the soaked flakes and stir-fry for 1-2 minutes. Make sure everything is mixed together.
Cover the wok and let it cook on steam for another 1 minute on a low flame.
Serve hot for breakfast or a snack with lemon and coconut, coriander as garnishing.