JAPAN: Bento box, ramen, tea.
Japanese workers only have half an hour to grab lunch in the middle of the day, and so it's important that their meal is fast and filling. Bento boxes, made up of compartments filled with hot and cold components, and ramen are both popular lunch options and are widely available across Japan.
or "Shepherds pie" (lamb stew with potatoes covering the top. Keeps warm till after noon)
Oh and "Cornish pasty" like the shepherds pie but all encased in pastry.
I typically did one of these most lunchtimes when I started working when I lived there , all washed down with a pint or 2 of course