unhealthy. reporter: big mac s maker lived to the age of 98. it was nearly 50 years ago that he first served a big mac at his mcdonald s franchise near pittsburgh. it was an instant success, went national, immortalized by the jingle where is the special sauce? there s the special sauce. the original big mac sold for 49 cents at the time. reporter: now it s as much as five bucks and sold worldwide, though in paris they call the big macla big mac. reporter: they say only one out of five millenials has even ever tasted a big mac. mcdonald s didn t lower its flag to half staff but it did tweet jim, we thank and will forever remember you. fans posted big mac tribute photos. one suggested to honor his