A quick browning in a lightly oiled frying pan on a high heat, turn the gas right down and then a long slow cook for half an hour or so, turning occasionally. Cut in half lengthways, place on white bread and douse with HP sauce, if HP is not available then Heinz tomato ketchup on one slice and Colman's English mustard on the other is acceptable. Ketchup on its own is wack. Edited because on reflection my original post of 'Shove them up your @rse?' came across as choleric.