No. I’m not talking about a brisket sandwich (like from Smoque) but rather something served at hotdog and beef stands around the city.
I found one yesterday that pretty much fit the bill...
Bob-O's Hot Dogs8258 W Irving Park Rd, Chicago
Bob-o’s This sandwich reminded me of a
Sloppy Joe but with chopped, thin sliced beef. Good flavor from the onion and peppers coming through. A bit of a vinegary tang.
It must be pretty popular there as there are two sizes available and a gent ordered a large one right after me.
The tradition from what I recall is the beef is throughly coated (soaked) in the sauce. If a tangy barbecue sauce is used it can be overwhelming...
Zel’s, Hammond (too tangy)
From what I understand it used to be a menu item prominently displayed on their exterior signage. Al’s Beef, Margie’s (RIP), Henry’s...
Al’s
Margie’s
Henry’s I would imagine the one from
Russell’s would almost be in this style (not soaked, mild sauce).
I remember a sandwich I received at the Jo Daviess County Fair in a booth run by the 4-H Club. A disappointment as it was ground beef in a tangy sauce.

I remember, back in the day it would be a menu item I would often order but it was so long ago that I really don’t remember its flavor profile?
Could it of been the tangy sauce I now don’t prefer?
"Very good... but not my favorite." ~ Johnny Depp as Roux the Gypsy in Chocolat