A fish finger butty has to be made using thick-cut, white, square bread, because it fits four fish fingers perfectly. Butter, tomato ketchup, premium cod fillet fish fingers (not the cheap things filled with fish slurry). Cut the sandwich so that you bisect the fish fingers. Perfect nom-nom-nom. Nothing else needed, except maybe a teensy dab of mayonnaise.
I am an Aussie, seanyboy, and I wouldn't dream of putting egg or cheese on a fish finger butty.
It would never have occurred to me to make a sandwich of fish fingers, but I have to say it looks like some seriously good comfort food. (Chips, though? Really? I have heard of the chip buttie, but I find it hard to imagine. And yes, I know that by that you mean fries.)
Hmmm. The potatoes-on-bread thing makes me think it would sit in one's esophagus or stomach like a starchy dough fist, but I'll admit that I could be wrong. I mean, it's got fried potatoes in it, so how can it not be good?
(Have added fish fingers to the grocery list. Hoping not to have to explain to BOP what nefarious purposes I plan to use them for. He already thinks I eat some pretty weird stuff, which is funny, because he's the one who eats weird stuff.)
Sammich with grease. It's not a butty unless it's something fried, a very important distinction from a regular sammich. Sauce (marta, bbq, even chili) and butter assist with the dough-ball-in-your-belly feeling, elizard.
A fried fish (or shrimp or oyster) po-boy is a good thing. Take a hoagie roll, stuff it with fried fish filets, add tartar sauce and sliced fresh tomatoes, a little lettuce. You know who puts cheese on a fish sandwich? McFuckingDonalds, that's who.
And I don't know why elizard is squeamish about a fried potato sandwich. I find them horrific, but she likes to have some starch with her starch, so I'd have guessed it would have fit right in. (The other night she made rice to go with her potatoes. *shudder*)