Magic mug

Magic mug
A promotional magic mug.

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.[1]

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.[2] Customers can also have their own photographs printed on the mugs.[3]

References

  1. ^ "Paris Opera Rises on Bunker Hill Setting the stage for opening of `The Phantom'", Janice Arkatov, LA Times, 30 April 1989
  2. ^ "Going back to the Plaid future", BBC News, 23 September 2006
  3. ^ "Coloured printing on ceramic launched", Indian Express Newspapers (Mumbai) Ltd., 19 June 2008