At Portillo's, folks are ordering their Italian Beef topped with the cheese sauce usually reserved for fries. The actual order is a beef, dipped, with sweet and hot peppers with melted yellow ...

When renowned street food chain Portillo's brings its legendary beef sandwiches to meet Lou Malnati's classic deep dish ...

Tony Darden, who starts at the Oak Brook-based Italian beef chain Dec. 9 ... What the activist investor targeting Portillo's wants management to fix Portillo's new largest shareholder wants ...