and YES it is true! There is a company named Morphotonix in Switzerland that developed a way to add rainbow hologram designs to chocolates.
If I understand it right, they placed "microstructures" on the surface of the chocolates via injection-moulding so they diffract light which produce hologram designs. Their website says that they focus on engineering controlled roughness of their customized designs.
Check this out!
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| Photonic Chocolate aka Chocolate with hologram design from Morphotonix website Chocolate with hologram design ScienceAlert.com
Oooohh,my sweet tooth can't wait...:)
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