Portillo's Inc., through with its subsidiaries, engages in the ownership and operation of fast casual and quick service restaurants in the United States. The company offers Chicago-style hot dogs and sausages, Italian beef sandwiches, chopped salads, burgers, crinkle-cut French fries, homemade chocolate cake, and milkshakes. As of June 27, 2021, it owned and operated 67 restaurants in Illinois, Arizona, Indiana, Florida, Iowa, Minnesota, Wisconsin, Michigan, and California. The company was founded in 1963 and is based in Oak Brook, Illinois.