In a mixing bowl, combine 4 tbsp ragi flour, 2 tbsp semolina, 1 tbsp grated carrot, 1 tbsp chopped onion, 1 tbsp chopped coriander leaves, 1.5 tsp salt, 2 tbsp yogurt, and 2.5 cups water. Mix well until a smooth batter is formed.
Add 2 tsp ginger paste, 2 finely chopped green chilies, 1 tsp cumin seeds, and the chopped curry leaves to the batter. Mix thoroughly.
Allow the batter to rest for 15-20 minutes, letting the semolina absorb the water and thicken the mixture. If desired, add 1/4 tsp baking soda to the batter and mix well.
Heat a non-stick or cast-iron skillet over medium heat.
Pour a ladleful of batter onto the center of the skillet, spreading it in a circular motion to create a thin dosa.
Drizzle a little oil around the edges of the dosa. Cook until the edges lift and the bottom turns golden brown.
Flip the dosa and cook the other side until fully cooked.
Repeat the process for the remaining batter, creating a total of 4 servings. Serve this ragi dosa with your favorite chutney or sambar.