How to Make a Glowing Mud-Like Substance Out of Potatoes

Grant Thompson, also known as The King of Random, creates glowing oobleck, a non-Newtonian fluid that’s a suspension of starch in water, out of potatoes and tonic water in his latest video.

When I realized that potatoes could be chopped up and soaked to leach out the starch, of course the first thing I thought of was making oobleck. My mind was blown when I experimented with this process, and realized the starch would collect at the bottom of the dish, and would stay in place when the water and impurities were poured out.

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