Take requisite quantity of cooking oil in a Pan. Fry potatoes in oil in low flame till the color of potatoes turns light brown (10 – 12 minutes)
Grind tomatoes to make puree.
Heat 2-3 Tbs oil in pan till it smoke and then add 1/2 tsp cumin seed and saute for half a minute. Add tomato puree and 1 Tbs coriander powder and 3-4 Tbs ‘Roasted Achar Masala’ in it and let it cook for 10-12 minutes. Put fried potatoes in it and and cook it for 2-3 minutes more. Delicious Achaari Aloo is ready.
Serve hot with chapaties or rice.