Scatter the spring onion over and serve. If using a block of tamarind instead of a ready-made paste, place 25g/1oz seedless tamarind pulp in a bowl and cover with 100ml/3½fl oz just-boiled water.

To make sure that you get a tangy taste, you should pick a good quality of tamarind. If possible, get a pack of seedless imli. Then, take some time to soak and simmer to make the imli paste ...