So, all you need is a tin of sardines in tomato sauce. Then mash it together with some mayonnaise and some ketchup, spread it on some bread, and put it under your grill!
i had it with a variation on greek salad. i ran out of red onion, so decided to bulk it out with a tin of mixed beans. mmmm.
it totally reminds me of the railway children...not sure why :)