"TammyM" > wrote in message
> Interesting. Does the above apply to newer MW technology? My
> microwave, a behemoth, is at least probably 15 years old. Would be
> convenient to be able to block the waves on certain parts of food...
>
> TammyM
> Sacramento, California

I learned that at a MW cooking class about 15 or 18 years ago. Part of the
demo was to put a piece of cheese and a piece of chocolate wrapped in foil
in the MW to see the results. Since the foil was flat, it did not cause any
arcing and, of course, the chocolate did not melt. They also cooked a
turnkey with foil protecting the wings.
--
Ed
http://pages.cthome.net/edhome/