By Lucy Marshall A curry is the perfect dish to serve up for the whole family this Mothering Sunday – and TV chef Nigella Lawson says there is a secret ingredient which can add great “texture” to the creamy dish. When it comes to cooking the nation has put its trust in food writer and restaurant critic Nigella for years. Whether it’s learning a new approach to cooking or simply improving buttering our toast, the celebrity chef has never failed us. Nigella, 64, has a trick when it comes to adding extra flavour to a curry while also not wasting an item most would normally throw in the bin, claim…
