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I tried one of the most famous hot dogs in Chicago and it was delicious — but I made one huge mistake while ordering
Chicago is famous for its hot dog, which is an all-beef Vienna dog topped with mustard, neon-green relish, tomatoes, white onions, a pickle spear, sport peppers, and a shake of celery salt. Portillo's is a restaurant chain that serves a classic Chicago-style hot dog. See what it's like.