Sandwich King - Season 4

Inspired by Chicago's Moon Sandwich Shop, Jeff reinvents two diner classics.

Jeff's in culinary heaven today, when he brings together Italian food and sandwiches.

It's all about the sweeter side of sandwiches today: Jeff and Lorenzo stop by the Angel Food Bakery to whip up homemade graham crackers and marshmallows, which Jeff turns into Adult S'mores and Kiddie S'mores!

Jeff visits Saigon Sisters to discover the secrets of the Vietnamese classic banh mi, and mimics the salty and sweet flavors in his own Vietnamese Sub.

Jeff explores his favorite Mexican food in Chicago and with best friend and cousin, Joe, sets out to find the city's best burrito.

Born and bred in Kentucky, Jeff's mother-in-law has Southern cooking in her bones, and she shows Jeff her master recipe for homemade biscuits, which Jeff uses as a jumping off point for some amazing twists on Southern classics for brunch.

Jeff "Sandwich King" Mauro visits Jeff "Breakfast King" Mauro at Chicago's JAM Restaurant and learns the techniques behind his famous French toast sandwich.

Jeff, along with his wife and siblings, revisit their beloved college town of Peoria, Ill., and Jeff takes on Schooner's famous 18-ounce pork tenderloin sandwich.

The Mauro family pays a visit to their favorite neighborhood joint to sample their special all-beef bologna burger.

Jeff celebrates the South Side of Chicago by exploring its regional specialties. He visits Calabria Imports, which invented "The Freddie" -- the ultimate Southside sandwich

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What could be more comforting than that old standby: the Sloppy Joe? Jeff remakes this classic in a healthier.

Jeff has never fished a day in his life, so he goes to Chicago's hottest seafood restaurant, Fish Bar, for his seafood sandwich fix.