The man who created a very popular burger at McDonald's has died.

FOX's Pat O'Neill has more:

He came up with McDonald's signature sandwich almost 50 ago:

(Delligatti) "McDonald's Big Mac, the big sandwich with a great big taste that everybody's talking about."

Jim Delligatti admitted his idea was a variation of some items at other fast-food rivals.

After meeting McDonald's founder Ray Kroc in 1955, Delligatti became a franchisee soon afterward near Pittsburgh, and first served the Big Mac at his Uniontown, Pennsylvania outlet in 1967. It soon went national and eventually international...

The original price for a Big Mac: 45 cents compared with an average of about $5 today.

Delligatti also credited with developing McDonald's breakfast menu, including the Egg McMuffin. He was 98-years-old.

Pat O'Neill, FOX News.

(AP Photo/Gene J. Puskar, File)
(AP Photo/Gene J. Puskar, File)