1: Boil kala chana with salt until soft.
2: Chop onion, tomato, potato, cucumber, and green chillies.
3: In a bowl, combine boiled kala chana, chopped onion, tomato, potato, cucumber, coriander, green chillies, mint leaves.
4: Add black salt, chilli powder, red chilly flakes, chaat masala, amchur powder, ajwain, tamarind sweet chutney, and lemon juice.
5: Mix all ingredients well.