Serve thin slices of this aromatic roast beef on split sub buns, spread with a store-bought humus and top with a crunchy coleslaw. Try mixing cauliflower florets into your slaw for a change. NOTE: ‘Time-to-cook’ figures are rough guidelines only as cook time is dependent on so many factors such as barbecue and thermometer accuracy, starting temperature of roast, roast shape and cut. A good thermometer is one of your best kitchen investments.