Although, you can find this sandwich on the menu at many diners, my favorite place to get one of these is right in my own kitchen. Back in the day, when the Catholic religion had a "no meat on Fridays" rule, Mama often made these for Friday lunch (and, sometimes, supper) for my brothers and me. In Chicago, especially during the Lenten season, many of the Italian beef stands offered this sandwich as an alternative to meat on Fridays ( I think that this is possibly how this sandwich came about). Whatever the case, I love this sandwich (and, I don't wait til Friday) and it brings me back to a simpler time!!!!