These Italian-American sandwiches are stacked high with sliced beef, pepperoncini-spiked jus, and giardiniera pickles, so you’ll need sturdy rolls to hold in all the goodness. Delis in Chicago use a spiral meat slicer to get wafer-thin slices of meat. At home, you can either slice the roast with a sharp carving knife into thin slices (best with bottom or rump roast) or shred the meat with two forks (if using chuck roast).