Mang Inasal was started by
Edgar "Injap" Sia II, who owned his first business at the age of twenty. Sia engaged in the food business at twenty-six years of age, opening the first Mang Inasal branch on December 12, 2003, at the Carpark Building of
Robinsons Place Iloilo in
downtown Iloilo City. In 2009, Mang Inasal expanded to over a hundred branches, opening its 100th branch in
Kalibo, Aklan. JFC acquired in April 2016 the remaining 30% previously belonging to Injap Investment, Inc. owned by Sia. The Sia family remains involved in the business with Ferdinand Sia as its COO. In 2018, Mang Inasal opened its 500th branch in
Mandurriao, Iloilo City. The first drive-thru branch opened on December 11, 2024, in
Santa Maria, Bulacan. On August 31, 2025, Mang Inasal’s first and flagship branch in Robinsons Iloilo, reopened after renovations, introducing fifth-generation store design, a dedicated take-out counter, its first cashless ordering kiosk, and a Mang Inasal Heritage Wall. == Products ==