firstly, in a pressure cooker take 1 cup soaked kala chana. make sure to soak 1 cup black chickpea overnight.
add ¾ tsp salt and 3 cup water.
pressure cook for 8 whistels or until chana is cooked well.
drain off the water and keep aside.
in a kadai heat 2 tsp oil and saute 1 chilli till it turns aromatic.
add in cooked chana and continue to saute for 2 minutes.
keeping the flame on low and add ¼ tsp turmeric, ½ tsp chilli powder, ¼ tsp garam masala, ¼ tsp aamchur, ½ tsp chaat masala, ¼ tsp cumin powder and ½ tsp salt.
saute on low flame until spices turn aromatic.
further mash off couple of chana to have good texture.
transfer the spiced kala chana to a bowl.
add 1 tbsp green chutney, 1 tbsp tamarind chutney and 2 tbsp curd. mix well.
further add ½ onion, 2 tbsp tomato, 1 potato, 2 tbsp coriander and 2 tbsp mint.
mix well making sure everything is combined well.
plate the black chickpea over the plate.
top with 1 tbsp curd, 1 tsp tamarind chutney, 1 tsp green chutney.
also add 2 tsp onion, 2 tsp tomato, 3 tbsp sev and 1 tsp coriander.
finally, kala chana chat or black chickpea chaat is ready to serve.