Host Rachel Martin that she wanted to preserve bits of pop culture that slipped away without anyone noticing.
"The speed of change gets lost sometimes, when we're in the middle of it, and I think looking back is something we don't always do enough," she says.
Cooper, who wrote the book with Brian Bellmont, had another, more personal reason for writing the book.
"I'm the youngest of seven, and all my brothers and sisters are baby boomers," she says. "Their pop culture ... dominated my life. And so to look back on my own was kind of a fresh experience for me."
But why pudding pops? Cooper says the sweet treats embody the experience she's trying to capture in her book.