I have *no idea* what it could be called, but i'm sure there *is* such a thing. It's driving me nuts. I've googled 'tradional hot sandwich ireland scotland england' and 'traditional pocket sandwich' and 'traditional laborer's food' and just found nothing. I'm *sure* i remember reading about this, but my brain just won't supply the details for me to figure it out.
ETA: Answered! Damn, you guys are fast fast fast.