How Big Is A Piece Of Chocolate?

The Rest Is Science

At what exact chemical ratio does our beloved chocolate devolve into a mere structure of fats and sugars? How far can you dilute chocolate before its fundamental identity vanishes?

And what could a comically tiny novelty stool possibly reveal about Michael Stevens?

Unlike a block of pure iron or a vial of chlorine, chocolate is not one single substance but a complex and heterogeneous mixture we all take for granted. Hannah and Michael explore the chemistry and nutritional boundaries of this everyday treat.

Where does the stool come in? You'll have to listen to find out.


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Video Producer: Adam Thornton + Oli Oakley

Video & Social: Bex Tyrrell

Assistant Producer: Imee Marriott

Senior Producer: Lauren Armstrong-Carter

Head Of Digital: Samuel Oakley

Exec Producer: Neil Fear

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2026-02-19 62 min

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