In a mixer jar, add 2 green chillies, 1-inch ginger, 4 garlic cloves, 1 tsp cumin seeds, and some curry leaves. Grind into a coarse paste without adding water. Keep it aside.
Then, in a mixer jar, add ½ cup water and 2 tbsp oil. Grind it — the white mixture is ready.
In a mixing bowl, add the ground mixture, ½ tsp turmeric powder, 1 tbsp red chilli powder, 1 tbsp coriander powder, a pinch of hing, 1 tsp ajwain, ½ tsp garam masala, green chilli-ginger-garlic paste, 2 tbsp white sesame seeds, ½ cup tamarind pulp, and 3 tbsp jaggery. Mix well — the masala mixture is ready.
Gradually add 2 cups of gram flour and make a medium-thick, ribbon-like pouring consistency batter.
Whisk the batter for 2 minutes to make it light and fluffy. Keep it aside.