This video from the American Chemical Society explains the science behind several life hacks, such as using salt to fix bitter coffee, and introduces us to a new one: easily getting the rust off of cast iron with a little bit of Coke.
Coke, the video reveals, contains phosphoric acid, which is used industrially as a rust and tarnish remover. It makes the rust easier to remove. So if you ever accidentally leave your cast iron pan covered in water, just grab a bottle of Coke and get your cast iron looking brand new again (after you season the pan, that is).
Thank you, chemists.
Chemistry Life Hacks (Vol. 1) – Reactions | YouTube via Business Insider
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Clean Up Rusty Cast Iron with Coca-Cola (and Other Chemistry Hacks)