Take a vessel and add quinoa, red rice, urad dal, fenugreek into it.
Add enough water and rinse it well. Wash it well for atleast 3 to 4 times. Discard the water.
Add fresh water and soak it for 6 hours.
Then, discard the water used for soaking. Add the ingredients into the mixie jar, little fresh water and grind it to a smooth batter.
Also add salt while grinding the batter. And then, add water little by little. Donot add it in one stretch.
After grinding, transfer it to a container and allow it to ferment for 6 to 8 hours.
When you open it after 8 hours, it would have fermented so well. And your batter is ready to make dosa.
Mix it well.
Heat the skillet or dosa tava. Sprinkle water and if you could hear hissing sound then the tava is ready and hot enough.
Take a ladle of batter and spread in a circular motion to make dosa.
Drizzle oil on the dosa and cook on both the sides. When one side is cooked, flip and cook on the other side.
Serve hot with Sambar, Chutney.