There is nothing nicer than mum's Sunday dinner and the Hairy Bikers are on a mission to champion this national triumph. Si and Dave visit two mums and a son, and sample a selection of delights from a second-generation Italian from East London. They also visit a mother and daughter who take on a regal classic, and a mum whose American father and husband rely on her culinary skills for a heart-warming taste of home. The celebration of Sunday dinners climaxes in a field filled with nearly 200 mums tasting and sharing each other's favourite dishes.