Collect samak rice (barnyard millet), sabudana (tapioca pearls), rock salt, and oil for cooking.
Soak samak rice and sabudana in water for 4-5 hours or overnight.
Blend soaked ingredients into a smooth, thick batter. Add water as needed.
Let the batter rest for 6-8 hours, allowing natural fermentation for better texture.
Heat a non-stick tawa (pan) and lightly grease it with oil or ghee.
Pour a ladleful of batter onto the pan, spreading it thin into a dosa shape.
Cook until crispy and golden, flip, and serve hot with vrat-friendly chutney or yogurt.