This is a South Indian stew known as Pulusu. It is a combination of sweet (from palm sugar) and sour (from tamarind). It is excellent as a side dish with curry, or you could increase the quantities and serve it as a main with rice.
Delicious, sweet and spicy! I followed this recipe exactly and loved the results. Another reviewer called it a stew but it's actually more of a side relish meant to accompany rice or flat bread. - 17 Jan 2012 (Review from Allrecipes USA and Canada)
Excellent. Starts off sweet,then the spicy and tangy taste kicks in. Yummy! My kids liked it too - 14 Oct 2012 (Review from Allrecipes USA and Canada)