Colored droplets in corn syrup seemingly blended together can be returned to their original state by reversing the direction of mixing, a form of laminar flow called "Stokes flow".
Video credit: UNM Physics & Astronomy
Further reading: https://en.wikipedia.org/wiki/Stokes_flow
@linnefaulk @wonderofscience Stokes flow is a well known phenomenon, although in this day and age things can be readily faked.
Here is a similar figure on Wikepedia.
https://upload.wikimedia.org/wikipedia/commons/d/d2/Time_reversible_flow_demonstration_in_a_Taylor-Couette_system.png
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Khurram Wadee ✅