Cook 10 minutes until oil separates. Add chole masala, red chilli powder and salt. Cook 3 minutes. Add boiled chickpeas with 1 cup cooking water. Mash 10 to 15 chickpeas against the pot. Simmer 15 minutes until thick and dark. Add garam masala.
Make bhature: combine maida, yogurt, baking soda, sugar and salt.
Add water gradually to knead a smooth, soft, slightly elastic dough.
Cover. Rest 2 hours — the yogurt ferments slightly.
Divide into 8 balls. Roll each into an oval 12 cm long.
Fry in medium-hot oil 1 to 2 minutes per side until puffed and golden. Drain.
Serve chole topped with sliced onion, lemon and green chilli alongside hot bhature.