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As the tongue twister and song goes,
All I want is a proper cup of coffee
Made in a proper copper coffeepot
Even going so far to rather having tea than using a coffeepot made out of tin or iron.
Having only experience with glass and steel coffeepots, I wonder what's so special about a copper coffeepot. Is there a big difference in taste?
There was a time long ago when it was fashionable to build kettles with solid copper. The reason for this has more to do with the heat capacity and conductance capabilities of copper and also because it is relatively easy to work (compared to modern alloyed metals like stainless steel). No doubt the song refers more to a personal preference, perhaps nostalgic in nature, than to a genuinely better tasting brew since, you know, hot water is hot water.
Copper conducts heat well, so a copper kettle will boil a bit faster than other materials.
I have a copper boiler on my espresso machine and an antique Georgian copper coffee pot (like the one in the tongue twister). Both are pretty and make good coffee but I don’t think the copper gets any credit.
Copper is a better conductor of heat which leadins to uniform heating and "cooking" of the beans.
