Sweet and Sour Prawn Patio

Prawn patio is a much-loved Parsi dish that combines sweet, sour and spicy elements. It reminds me of the Bengali prawn curry – minus the coconut – in my first cookbook and is quick and easy to make, perfect for a midweek meal. The sour flavours come from the vinegar and lemon juice – in Gujarat, a very particular cane sugar vinegar is added, but as this is hard to source elsewhere, I suggest using cider vinegar or even a dash of balsamic vinegar.