Mix jowar flour, rice flour, and semolina in a bowl. Add salt, onions, curry leaves, coriander, green chilies, and ajwain. Gradually add water to create a thin batter.
Let the batter rest for 10 minutes, then adjust the consistency by adding more water if necessary.
In a blender, combine mint leaves, coriander leaves, green chili, sea salt, peanuts, cumin, and lemon juice. Add ice cubes and blend until smooth.
Heat a tawa or griddle over medium heat. Spread the thin batter evenly over the tawa, filling all gaps. Cook the dosa from both sides until golden and crispy.
Fold it over and serve with the prepared chutney.
Notes
Make sure your batter is thin for crispier dosas.
Let the batter rest for at least 10 minutes to ensure the flours absorb the water properly.
Use a non-stick tawa for the best results.
Cook on medium heat to get an evenly cooked dosa without burning.