In a frying pan, roast the coconut with the coriander, methi, urad dal and tuar dal until brown (use low heat). Grind the mixture into a paste when cool. Cook the pumpkin with the chile powder and turmeric powder and salt. Add the tamarind extract and simmer for a few minutes. Add the coconut paste, hing powder and the curry leaves. Heat the oil in a frying pan and pop mustard seeds and dry red chiles and add to the mixture.