first of all, in a large kadai dry roast urad dal, chana dal, toor dal and methi seeds.
roast them till they turn warm.
and then transfer to a mixer jar and make smooth powder. keep aside.
furthermore, dry roast the rice flour and rava.
now, in a large mixing bowl transfer the roasted rice flour and rava.
also add ground powder to it.
in addition, add sugar powder, salt and baking soda.