Steps for preparation

In a mixing bowl – add millet flour (1 cup), rice flour (1 cup), onion, curry leaves, chilli and required salt. Mix it well. Then add water little by little.
Mix it well using a whisk without any lumps. It should be runny so that while we pour the batter should spread by itself. Now the batter is ready.
Heat a dosa tawa, take a laddle full of batter and pour it first in the outer circle, then pour to fill in the center to fill the uncovered areas like how we do for rava dosa. Cook in medium flame.
Drizzle oil and cook until the top looks cooked. Fold and serve hot.
Your dosa is ready.