Known for their famous Chicago-style hot dogs, Italian beef sandwiches, chopped salad, cheese fries, homemade chocolate cake, and chocolate cake shake. The Italian beef is slow-roasted for four hours, thinly sliced, and served on freshly baked French bread. Then, it's dipped in hot gravy made with a homemade blend of seasonings perfected over 50 years. Haven't tried Portillo's yet? Order an Italian beef, dipped with sweet or hot peppers (add mozzarella if you're feeling cheesy), or a Chicago-style hot dog "dragged through the garden" and you'll see what all the hype is about.