Sullivan invited executives from the McDonald's corporation, including owner and business tycoon Ray Kroc for dinner at two family-owned, "hole-in-the-wall" saimin stands in Honolulu: Washington Saimin and Boulevard Saimin. That night, Sullivan convinced Kroc to expand McDonald's menu for the first time in its corporate history to include a local "ethnic" food. Researchers worked extensively with Washington Saimin to develop a recipe for McDonald's Hawaii. Sullivan secured deals with Ajinomoto, a local Japanese saimin noodle factory and fishcake supplier, to manufacture a special soup base.