Same as pinto. Wash, soak, boil, simmer, season to taste.
I think by black dal you mean the urad dal with husk. That is cooked in Punjab.
Black rice (aka forbidden rice) is rich in anthocyanins and so when cooked has a very strong purple colour. It DOES take a lot longer to cook than even brown rice. My first attempt to cook it was as...
I like to simmer them over medium heat with a few strips of bacon or pieces of conecuh sausage for 1-11/2 hours. You can also add okra if you want to.
Calpurnia