CHICAGO, Jan. 27, 2026 (GLOBE NEWSWIRE) -- Portillo's, the iconic Chicago-based fast-casual restaurant famous for its Italian beef sandwiches, char-broiled burgers, crinkle-cut fries, cake shakes and more, is heating up Valentine’s Day with the launch of five new flavor-packed dipping sauces available at all restaurants nationwide starting today. To celebrate the launch, Portillo’s is offering members of its loyalty program, Portillo’s Perks, an exclusive opportunity to dip, dunk and discover its bolder fl ...