Take 1/2 cup moong dal(soaked for 2 hours and then boiled for 5 minutes on medium flame)
Grind the dal coarsely in a food processor for 10 seconds.
Take the spices such as fennel seeds, coriander seeds, cumin seeds and dry red chilli and crush them.
Heat 5 tbsp oil in a kadhai/wok. Add the crushed spices and saute on low flame.
Add gram flour and fry on low flame.
Add asafoetida or hing and cook it with besan.
Add grated ginger and mix well with besan.
Add all the spices now - black salt, cumin, turmeric, coriander, garam masala, amchur powder, kasuri methi, red chilli powder and salt and fry on low flame with besan for 1 minute.
Add moong dal and mix well to make the stuffing. Leave it aside for 5 minutes.
Make small lemon size balls for stuffing.