In the old days when I lived in Columbus and would go to Lima for the flat track there was a little dive close by that everyone went for a fried bologna sandwhich. It was thick cut and about the size of a hamburger patty, sounds gross, but it was really interesting. All they biker dudes knew about it, ask around. (this place might be half way between Columbus and Lima)

I think that you are refering to the G & R Tavern in Waldo, OH near the intersection of US 23 and SR 423.