Jollibee founder Tony Tan Caktiong (second from right) and Mang Inasal founder Edgar ‘Injap’ Sia 2nd (second from left), along with Jollibee Foods Corp. President Ernesto Tanmantiong and treasurer Joseph Tanbuntiong, inaugurate the 500th Mang Inasal restaurant at West Diversion Roadin Iloilo City on Tuesday. Jollibee and Mang Inasal are partners in the real estate company DoubleDragon Properties Corp.