Private equity firms are attracted to the rapid growth opportunity available in the so-called quick-service restaurants' (QSR) business in Asia as McDonald's Corp makes plans to bring in partners to own the restaurants within a franchise operation. "In recent years, even though formal dining may have been impacted by the austerity measures, QSR as a format is growing pretty rapidly," said Kiki Yang, a Greater China partner with Bain & Company. "QSR has the format that a lot of investors like because of the growth of the segment, standardized procedures and it's easy to expand."