Decoder Ring · Slate Podcasts

A Prune by Any Other Name

February 25, 2026·45 min·3 clips

Willa Paskin spots PlumSmart juice and wonders if it's just prune juice in disguise.

A container caught the host's eye. It said 100% juice, had a sky blue and purple label, and showed a plum where the host suspected a prune. The joke lands fast. PlumSmart opens the door to a bigger question: why did prune juice need a gentler disguise? The label was not subtle. It leaned on digestive health, prebiotic fiber, magnesium, and potassium, while steering around the awkwardness of prune juice. The host remembers that dodge, and the memory turns into a twenty-year irritation with a product trying to pass as something less mortifying. Then the story gets stranger. A guest explains how the California Prune Board looked for ways to push more prunes into new markets. One idea was prune puree. Blend prunes with hot water and you get a binder that can make food sweeter, juicier, and more nutritious. Somehow, that led to hamburgers. School lunch programs bought a lot of hamburger, so the board saw a practical use for surplus prunes. The pitch sounded absurd. Even the USDA laughed before tasting the patties and deciding they were better than expected. Then children became the test. Public school reports suggested many students did not mind the prune burgers all that much. For a while, the numbers got big: at the peak, the USDA would purchase 10 million pounds of prunes for this workaround. But moving inventory was not the same as fixing the embarrassment. The episode sits with that odd little problem: a humble fruit tangled up in naming, disgust, age, digestion, and marketing nerves.

As heard by us

A funny, specific food-history mystery about why prunes keep trying to escape their own name.

A bottle of PlumSmart sends Decoder Ring into the funny, faintly mortifying life of the prune, a fruit forever trying to sound like something else.

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Why you'd press play

The moment you recognized plum juice as prune juice in disguise -- someone spent decades hoping you wouldn't.

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