Chile de agua is a chilli that’s famous in the Oaxaca region of Mexico. It is known by a few names and you may have seen it called bullhorn chilli, banana chilli, sweet pepper, paprika or heirloom pepper. These chillies have much more flavour than a capsicum (bell pepper) and a gentle heat, hence the name, which means ‘water chilli’. Here I make a gazpacho from them, which is a lovely partner for the salt cod fritters.