Soak rice and quinoa together for at least 3-4 hours.Rinse well and grind until smooth.Sprinkle water as and when it sticks to the sides, but sprinkle and add. Do not add more.Takes 30-40 mins for grinding.
Soak urad dal and fenugreek seeds together for 2 hours, rinse well and grind to a smooth batter.I used my grinder which works best but you can do in mixie too. It takes around 30 mins.
Transfer both the batters to a tall container big enough to hold the batter after fermentation.Add salt to it.Mix well.
Close with lid and set aside for 8 hours for fermenting.This is how the fermented batter will look after 5 hrs.Mix well.The batter will be thick.
As we need to thin the batter, transfer half of the batter or as needed to a separate container, add water to it.The batter should be flowing as shown.Heat a dosa tawa, take a laddle full of batter add 2 laddles on the tawa and spread it thin like this.
Drizzle oil and cook until it starts to brown,Flip over and cook for 2 seconds then fold and serve.
Serve hot with chutney and sambar!