Combine flour, salt, baking soda and powder, sugar, and yogurt and mix well. Add some water and knead into soft dough.
Add 1 tbsp oil and knead again and keep aside to set for 15-20 minutes.
Heat the oil in Wok, when oil is hot enough. Divide the dough into equal 6-8 portions and roll each portion and deep fry them till to golden. Drain and keep aside.
Wash and Soak the chanas overnight and boil them in pressure cooker with salt and water till to soft.
Heat the oil in non-stick pan; add cumin seeds, asafoetida and green chilies. Saute for few seconds.
Add ginger chili paste and add coriander powder, chana masala, and red chili powder and mix well.
Add chanas, boiled potato, and stock and mix well. Cook the curry till to thick and tender.
Garnish with coriander and serve with bhaturas.