Right, and they have a lot of thermal mass. With the ceramic mugs at home I don't really bother pre-heating them but with the travel mugs I rinse them with boiling water then bring the water back to the boil before making the tea. It makes a difference to the brewing and to how long the tea stays hot enough to enjoy.
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timeasmymeasure
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Date: 2011-01-08 05:37 pm (UTC)