By Hadas Kuznits

PHILADELPHIA (CBS) — The 16th annual all you can eat Super Scooper Ice Cream Festival on Penn’s Landing is underway through Sunday. It’s an event to benefit a worthy cause.

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Those who attend the festival might come for the ice cream, but they leave learning about the cause.

“They’re collecting money so they can give it to the hospital,” said one child.

Jeff Kahn, founder of the Joshua Kahn Foundation started this event 16 years ago after his son passed away from childhood leukemia. He puts his pain into something positive.

“I have no other choice. I can’t stop,” he says. “I have other children I love very much and I don’t want Josh to be forgotten.”

All of the money raised at the event is used for pediatric cancer research.

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“We’ve donated over a million dollars to Children’s Hospital,” Kahn says.

And those kids who attend the festival do their part by eating ice cream.

“Ice cream is what you want. Doing something to help people is what you need.”

(Reporter): “How many cups of ice cream and water ice do you think you can eat?”

“Maybe a jillion!”

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