{{Short description|Drinking cup that changes colour}} thumb|right|Video of hot water being poured into a "magic mug" and the subsequent colour change|alt=Hot water is poured into a black mug, over about 20 seconds most of the mug changes colour to white, revealing black logo markings thumb|right|A promotional magic mug filled with a hot liquid (left) and empty (right) A '''magic mug''', also known as a '''heat changing mug''', '''transforming mug''', or '''disappearing mug''' is a mug that changes color when it is filled with a hot liquid. This effect is created by using thermochromic ink.
Magic mugs are often manufactured and sold as memorabilia. For example, a mug may reveal a picture of the town or monument where it was sold, for example the Haunted Mansion/Grim Grinning Ghost Disney cup.<ref>{{Cite web|last=Coffey|first=Kelly|date=2020-05-28|title=Heat Sensitive Haunted Mansion Themed Coffee Mug Materializes Into Disney World|url=https://insidethemagic.net/2020/05/heat-sensitive-haunted-mansion-mug-kc1/|access-date=2022-02-23|website=Inside the Magic|language=en-US}}</ref> They are sometimes given away to promote organizations. Customers can also have their own photographs printed on the mugs.<ref>{{Cite web|last=Tansill-Suddath|first=Callie|date=19 July 2018|title=This Color-Changing Photo Mug Will Let You Surprise Your BFF With A Secret Picture|url=https://www.bustle.com/p/this-color-changing-photo-mug-will-let-you-surprise-your-bff-with-a-secret-picture-9817520|access-date=2022-02-23|website=Bustle|language=en}}</ref>
==See also== * Noggin (cup) * Fuddling cup * Plastic cup * Coffee cup
==References== {{reflist}}
Category:Drinkware Category:Memorabilia
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