To make idly batter:
Ingredients - 4cups of half boiled rice, 1cup of urad dal.
Preparation: Soak the Half boiled Rice and Urad Dal separately for 4-5 hours. Grind it separately in the wet grinder. Grind the urad dal first. While grinding Urud dal, it is important to note that water should be added gradually. Once the Urud Dal batter is smooth, remove it and keep it aside. Now, grind the rice . Once the rice batter is ready, mix this with the Urud dal batter, add salt and mix it well. Leave this batter to ferment over night.
Now your idly batter is ready. This idly batter can be used for different varieties of tiffin.
On the first day, you can make idly (The batter should not be mixed).(Important)It will take 6-7 minutes for steam cooking it.
On the second day, the batter will be little sour. You can make Dosa by adding little water into the batter and mixing it.
On the third day, you can add green chillies, grated carrot, coriander,jeera and curry leaves. With this mixure, you can make dosa, or utthapam, or paniyaram(Paddu in Telugu)
With the same mixure (chilli, carrot etc), you can add Ragi flour(Half of the Qty) & make dosa.
Another choice is to make The same mixure you can add sprout green gram(Sprout green gram&Green chillies, Ginger little grind in mixie & add to the dosa flour)u can make dosa.