Take 1 cup of poha and wash it properly and keep aside for 2 - 3 minutes till it's soft and fluffy. Then add salt (as per taste) and turmeric powder to poha and mix gently.
Heat oil in a pan. Once oil is hot put mustard seeds and let it splutter.
Now add curry leaves, green chillies and onions. Saute for 2 minutes on low flame. Then add diced potatoes and green peas and cover with lid. Keep on low flame.
Once potatoes & peas are properly cooked, add soaked poha into it.
Mix well and saute for a minute. Add in lemon juice and coriander leaves. Give it a nice stir and turn off the heat.
Cover with a lid and rest for a minute before serving.
Serve poha served with finely chopped onion and tomato on top of it with freshly chopped coriander leaves.