On 7/21/2015 7:26 PM, Nancy2 wrote:
> Sf, those (bread, gravy, mashed potatoes, roast beef) are hot roast beef sandwiches, still a
> staple menu item...and a good one when done right...at any self-respecting American diner.
> Thankfully, there are some good ones to be found around here.
>

And in Minnesota, that's called a "commercial", or "hot beef
commercial" (they can be pork or turkey, too):

"...our restaurant called them commercials because it was a favorite
order from traveling salesmen, 'commercial people'."
https://mnsandwiches.wordpress.com/