Black cumin is quite different from standard cumin, being more complex and delicate. Neither should it be confused with black onion (nigella) seeds. That said, nigella has a lovely onion-ness which will really round off the yeasty tartness of these cakes. Hing is also quite onion-garlicky and probably not needed here. Or is it?
Keyword fermented, indian, pro-biotic, pulses, rice, snack, spice, street-food, vegan, vegetable protein, vegetarian