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A magic mug is a mug that, when filled with a hot liquid, changes colour. This effect is created by using a special oxidized ink.
These 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. They are sometimes given away to promote organisations. Customers can also have their own photographs printed on the mugs.
Video Magic mug
See also
- Noggin (cup)
- Fuddling cup
- Plastic cup
- Coffee cup
Maps Magic mug
References
Source of article : Wikipedia