Ingredients:

100 grams chickpeas/Kabuli channa
2 large potatoes, boiled and cubed (optional)
1 medium onion
1 green chilli
1 large tomato, cubed
1 teaspoon chaat powder
1 tablespoon juice of lime 
1 cup chopped coriander

salt to taste

Preparation:

Soak chickpeas overnight in water.
Pressure cook and keep aside.
Chop onion and green chilli.
Add chickpeas, potatoes, tomatoes, chaat powder, lime juice, coriander and salt.
Mix.

Serve chilled.