I got this recipe from my Food-page friend Nilima Kotulkar. Its really yummy.
Tamarind -- small lemon sized ball
Red chilly fried -- 12 to 15
Hing powder -- ½ tsp
Coconut oil -- 1 tsp
Salt to taste
Add water to tamarind and prepare tamarind puree, soak red chillies in the tamarind puree for 10 to 15 minutes, grind this into fine paste. Then add hing powder and coconut oil and mix it well. Yummy Hinga gojju is ready to serve with dosa or rice.