1. Pressure cook baby potatoes in salt and water on medium heat until 1 whistle OR until completely cooked but still firm;
2. Make sure you add enough salt while cooking.
3. Soak the tamarind in a small cup of warm water and keep aside for some time; Meanwhile, peel the cooked potatoes.
4. Heat oil in a heat bottomed pan and temper with jeera,haldi and urad dal.
5. Add the cooked potatoes and saute well.
6. Add tamarind juice, rasam powder, jaggery;
7. Simmer and cook covered for about 10 mins or until the potatoes are coated well with the masala.
8. Saute once in a while; Add salt as required.
9. Adjust the taste of tamarind and jaggery according to your wish.
10. Remove from stove; Garnish with chopped onions, cilantro and serve hot with rotis or as a starter!!

Courtesy: http://maneadige.blogspot.com/