Inspired by one of my favourite flavour pairings in Indian cooking – potato and ajwain – reimagined in this herb-laced gnocchi dish. In one of my favourite recipe books, The Science of Spice, Dr Stuart Farrimond explains how ajwain (or carom), a small but intensely aromatic seed, belongs to the same botanical family as parsley and coriander/cilantro. Though tiny, its flavour is bold and unmistakable. It tastes of thyme (thanks to a compound called thymol) but