Add the peas, cayenne, turmeric, cumin, coriander, asafetida (if using), and the tamarind pulp. Stir well and allow to simmer uncovered while you prepare the next step.
Asafetida is used as a digestive aid, in food as a condiment, and in pickles. It typically works as a flavor enhancer and, used along with turmeric, is a standard component of Indian cuisine, particularly in lentil curries, such as dal. It can be found in Indian or other ethnic and specialty markets.