The list of classic Chicago foods includes pizza, hot dogs, Italian beef—and Eli's Cheesecake, a creamy confection with a hint of sour cream and a butter shortbread cookie crust. The dessert was first served at Eli's The Place For Steak, a restaurant owned by lifelong Chicagoan Eli Schulman that served guests from local politicians to visiting celebrities like Frank Sinatra. Today Eli's son, Marc, oversees the family dessert business, which makes cheesecakes and other sweet items for restaurants and grocery stores worldwide. The Distance takes you inside a real-life cheesecake factory.