Namasthe in this podcast glad to share regarding dosa batter preparation method in 1940's..ingredients--normal white rice(pacharisi)-1 cup, vellaikar idly rice--1 cup,(can use any kind of boiled rice/pulungal arisi).1/2 cup urad dal,channa dal(kadalai paruppu)-1tsp,Thur dal(thuvaram parupu)-1tsp,methi--(fenugreek seeds)--1/2 tsp.salt.soak together in water for 2 1/2 hrs -3 hrs.fermentation --8--12 hrs.consume it within 24 hrs.thank you .