Blend turmeric powder, chilli powder, black pepper powder, coriander powder, cinnamon, cloves, cardamom, NutMeg, bay leaf with grated coconut. Add lukewarm water to get a nice thick gravy.
Heat oil in a kadhai and add sliced onion and garlic. Stir well for 2-3 mins and add sliced green chillies, ginger, tomato & chopped potatoes. Mix it with the masala prepared earlier. Add 1 cup of water & salt and cook it for 15-20 mins. Once the potatoes become tender slice the egg into two pieces and slowly put this into the gravy.
Garnish with coriander leaves. Serve hot with roti, rice, etc