Sunday, August 16, 2009
Posted by 醉茶生 at 04:53 PM | Comments (2) | Permalink
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Tea rapidly stains white porcelain, but plain water, a scouring pad
and elbow grease will remove them. If you have a lot of stained China,
then the fastest way of removing the stains is by soaking it in
bleach.  Not all porcelain will stand up to this treatment: in
particular, painted or gilt porcelain must be overglazed or else the
bleach may damage or discolour the paint.  On the other hand, I would
argue that painted, unglazed porcelain is suitable only for decoration
and not for daily use, because the heavy metals used in the
manufacture of many porcelain paints will leach out and poison you. If
unglazed porcelain is stained, then a scouring pad will also damage
the paint just as badly (if not worse) then bleach would.

Never bleach unglazed clay or pottery, because the bleach will soak
into the clay and each time you use it, your tea will hence forth
acquire the penetrating aroma of bleach.

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