The company was started by Edgar Sia, 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 in December 2003 at the Robinsons Mall Carpark in Iloilo City. The restaurant was an instant success, despite stiff competition from other, more established grilled-food restaurants.
The chain opened its first branches within the Visayan region, then expanded to neighboring Mindanao to the south before spreading to Metro Manila. Thereafter, the company started franchising in 2005. By 2008, Mang Inasal had opened 23 restaurants, with ten being franchised. #MANGINASAL #JOLLIBEE #MANGINASAL #MANGINASALRESTAURANT #MANGINASALFOOD #MCDO #KFC