CHICAGO (CBS) — His death in 2015 here in Chicago, was ruled a suicide, and it rocked the culinary world.

CBS 2’s Vince Gerasole reports on a new documentary, premiering in Chicago tonight, that takes a look at the visionary mind of Chef Homaro Cantu.

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From his Highland Park edit sweet, director Brett Schwartz reflects on a friend’s life.

“He wanted to make the world a better place,” he says.

Cantu earned international acclaim creating foods that surprised the senses, but that was just the beginning.

As Schwartz explains, “He was a chef, but he stopped using that title. After a while, he wanted out make the world a better place.”

He’d go on to finesse a natural berry that could turn sour foods sweet, making them palatable for patients on chemotherapy.

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“I think his genius was the ability to think big,” Schwartz says.

He’d also create indoor farms to feed the homeless.

“Sometimes he’d be like a firehouse spouting out ideas and some of them couldn’t come to fruition,” Schwartz adds.

And then at the height of his fame in 2015, while Schwartz was working on a documentary with Cantu, the innovator suddenly and unexpectedly took his own life.

Schwartz eventually finished the film. Called “Insatiable,” it chronicles Cantu’s rise from a rough beginning

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Insatiable: The Homaro Cantu story, premiered locally at the Chicago International Film Festival Tuesday. It will be shown again next Monday, with a tribute dinner to Cantu that will follow.