Wash and soak rice and dal for 4-5 hours.
Grind to a paste, it has to be like idli batter.
Leave it to ferment for at least 5-6 hours or overnight.
When you are ready to make this, take a steamer with enough water and bring to a boil.
Place an empty greased thali in this.
Add salt, oil, chili ginger paste and lastly cooking soda. Beat well.
Pour into the greased thalis.
Sprinkle either red chilly powder or black pepper.
Cover and steam for about 5-7 minutes.
Check with a knife, it should come out clean.
Bring out the thali and apply a layer of oil on the cooked Edadas.
Cut into squares or diamonds.