Black Urad Dal Idli & Dosa makes soft and fluffy idli or crispy dosa which has urad dal with skins on so this dosa is packed with more fibre. This black urad dal idli and dosa batter is a nutritious twist to the regular idli batter. In this recipe, black urad dal is used instead of the usual white urad dal, which makes the idli and dosai more protein rich and healthy.