Dry roast cumin seeds, fennel seeds and coriander seeds.
Transfer to a mortar pestle. Let it cool and roughly ground it.
Heat oil in a pan. Add green chilli and cook for a min. on a low flame.
Add boiled or frozen green peas. Mix well and cook for 2-3 mins.
Next add turmeric powder, red chilli powder, coriander powder, roasted grounded powder (fennel seeds, coriander seeds & cumin seeds), dry mango (amchur) powder, black salt and salt to taste.
Mix everything well and cook for half a min.
Next, add boiled & mashed potatoes and mix well.
For freshness add coriander leaves and mix well.
Set aside and let it cool.