Heat oil in a wok/ saute pan; add urad, chana, mustard seeds, cumin seeds, dry red chili and cashews. Once the seeds start to sputter and the dals turn golden, add grated ginger and green chilies. Cook for 1 minute.
As needed Oil, for cooking, 2 teaspoons Oil, 1 teaspoon Urad dal, 1 teaspoon Chana dal, ½ teaspoon Mustard seeds, ½ teaspoon Cumin seeds, 1 Dry red chili, 6~8 Curry leaves, 1" Ginger piece, grated, 2 Green Chilies, finely chopped