Prep the Greens: Wash the coriander thoroughly, drain the water completely, and chop it finely along with the tender stems.
Mix the Flours: In a large bowl, combine the chopped coriander with jowar flour, rice flour, rava, and besan.
Add Flavour: Add the sesame seeds, cumin-coriander powder, carom seeds (crushed by hand), hing, red chilli powder, turmeric, and salt.
Incorporate the Secret Crunch: Add the coarsely crushed soaked chana dal and the ginger-garlic-chilli paste.
Form the Dough: Mix everything together. Add a very small amount of water only if needed to form a thick, tight dough.
Steam the Vadi: Grease a plate with oil. Spread the dough evenly on the plate (about 1/2 inch thick). Sprinkle some sesame seeds on top. Place it in a steamer or a kadhai with water and steam for 10–12 minutes.
Cut into Cubes: Once cooled, grease a knife with oil and cut the steamed cake into square or diamond-shaped pieces.
Fry until Golden: Heat oil in a pan. Shallow fry or deep fry the pieces on medium heat until they turn golden brown and crispy on both sides.