First we soak both dal separately in vessel for 4to5 hours, then drain and grind both,mix well add sour curd and mix well leave it in a clean place for about 12 hours

Now batter is ready,then season the batter with salt,chilli, ginger paste,and turmeric, mix well,then we add baking soda in little oil and mix with the batter

Now heat steamer,meanwhile grease a plate with oil and pour batter,steam 20 minutes,