Big Mac Creator Jim Delligatti Dies

The burger that McDonald's initially didn't want on the menu became the fast-food chain's most famous.
1:26 | 11/30/16

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Transcript for Big Mac Creator Jim Delligatti Dies
Finally tonight, remembering an American original. The grandfather behind the big Mac. This is the sandwich. McDonald's new Big Mac sandwich. For the bigger than average appetite. Reporter: 1967, the first big Mac. Seven ingredients. And do you remember the jingle? ??? Two all beef patties ??? ??? on a sesame seed bun ??? Reporter: Long before the jingle, Jim created the Big Mac at his uniontown, Pennsylvania, restaurant. Here's the ad he ran, announcing the Big Mac when it was just 45 cents. He and his wife had two sons, five grandsons, eight great-grandchildren. This is my dad Jim. This is my dad. He created the world's greatest burger. Reporter: Here is one of his grandsons telling us something you may not have known. One of the tricky parts of the sandwich is, when he meat the two beef patties and the cheese and with the lettuce and everything, it would slide off the sandwich. So, he put that bread in the middle and it became the big Mac. Reporter: When the burger turned 40, McDonald's estimated it was selling 550 million a year. That's roughly 17macs every second. Tonight, McDonald's tweeting out their gratitude to that American grandfather, and quoting him. Jim once saying, "I would never have dreamed that my creation would turn into a piece of americana." Jim was 98. And I want a Big Mac. I'll see you back here tomorrow.

This transcript has been automatically generated and may not be 100% accurate.

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