In a mixing bowl, add 2 cups wheat flour, ¼ cup rava, and 2 tbsp besan. Add salt and mix well.
Heat 4 tbsp oil and add it to the flour mixture. Mix well until the mixture becomes crumbly and binds when pressed between your hand.
Finely chop 2 cups coriander leaves.
In a mixer jar, add 3–4 green chillies and 1-inch ginger. Grind to a paste and keep it aside.
In a mortar-pestle, add ½ tsp black pepper, 1 tbsp cumin seeds, and 1 tsp ajwain. Coarsely crush them.
Add chopped coriander leaves, green chilli-ginger paste, crushed masala, 2 tbsp sesame seeds, ½ tsp turmeric powder, and 1 tsp red chilli powder to the flour mixture. Mix well.
Add ½ cup water or as required and knead a tight dough. Add 1 tsp oil and smoothen the dough.
Cover and rest the dough for 5 minutes.
Take a medium-sized dough ball and roll it into a large, thin roti.
Prick the roti with a fork and cut puris using a cutter or bowl. Prepare all puris in the same way.
Heat oil, add the puris, and fry on a medium-low flame until they become crispy.
Remove on a wire rack and fry all puris similarly.
Allow them to cool completely and store the papdi puri in an airtight container.