The Irish are slightly obsessed with breakfast rolls. There is even a song about it!
https://www.youtube.com/watch?v=EIIWKA_h12Q&ab_channel=PaddyBarry
It is basically the whole contents of a full Irish stuffed into a baguette. Fillings include sausages, bacon, white or black pudding, egg, hash brown, butter, mushrooms, tomatoes; tomato sauce or brown sauce.