Chef English has added another unique restaurant in Las Vegas. His P.U.B. (which stands for Public Urban Bar) features comfort food. English’s grandmother used to make this sandwich for him as a child. So, when he opened the P.U.B. he knew this dish needed to be on the menu. You never knew that two slices of white bread, bologna, mozzarella cheese, mayonnaise and mustard could be so comforting. $16, in Crystals at CityCenter, 489-8080.