As I have told you, the trick is very simple...
The chanawala has managed a small clay pot with some burning charcoal in it. The clay pot has a handle made of iron wire. If you notice carefully, the clay pot has some small holes at upper part of it for ventilation.
After placing some burning charcoal in the pot, chanawala puts small wood pieces to ensure continuous heat. Now, next step is very simple...using the wire handle place the fire pot inside the pile of fried chana.
Warm fried chana is very populer among commuters especially when they are returning home after a day long business in Delhi.
Next time you come across a chanawala, think before ignoring his warm chana with black salt!
[Chana=Chickpea. Chana is also known as chhola or chola in India. Chana is a part of reguler Indian diet and well apprised for its high protein and fiber content! ]