Giovanni Pilu loves introducing people to the produce of his native Sardinia, such as carta di musica - a thin, crisp, double-baked Sardinian flatbread; it’s available from some delis, specialist provedores and online. In this recipe, he softens it and uses it almost like a sheet of pasta to enclose a filling of prawns and John dory before pan-frying it to re-crisp it. Carta di musica comes in di
