Sausage & uncured pepperoni (no nitrates or nitrites expect for those found naturally in sea salt and celery powder). Of Chicago. The original. Chicago style. Since 1966. Golden brown crust. Chunky tomato sauce. Crumbled Italian sausage. Classic uncured pepperoni (no nitrates or nitrites expect for those found naturally in sea salt and celery powder). Gooey mozzarella cheese.