Is a corroded copper teapot safe?
I bought what I thought was a rusted teapot recently, treated it with an environmentally friendly rust remover, cleaned it thoroughly, and only then realized the bottom says "chrome on copper". The inside surface is pretty rough copper (not patina), so I'm just wondering whether that's a reason not to use it for tea.
Best Answer
It is currently a matter of opinion, not science, whether or not cooking hot foods in an unlined copper vessel leads to unheathy amounts of copper in the diet. Many health authorities caution against the use of pure copper even for cold drinks. However, it is demonstrably true that many, many people use pure copper vessels for cooking various foods and have done so for centuries, and Ayurvedic practitioners even consider water from copper pots to be healthier. And most of us have copper pipes, at least for hot water, and don't worry about it even though copper leaching from acidic water in pipes is a widespread health problem.
I was able to find lots of opinions on whether or not to use unlined copper vessels and kettles. This Fine Cooking article is typical of all of them. What a literature search does not turn up is any kind of actual science. National and regional health authorities seem to take it for granted that copper kettles leach toxic amounts of copper, and don't bother to test it, and everyone else seems to ignore them.
As such, as long as there's no history of Wilson's Disease in your family, I'd leave it up you. If you really like the kettle, use it. If you don't, then use something with no doubts attached -- and much easier to clean -- like stainless steel or ceramic.
Since this is a teapot and not a kettle (per comment), you do need to be careful of the acidity level of the teas you brew in it. Strongly acid teas will cause the kettle to corrode, and whether or not that results in unhealthy copper leaching (again, no science on this yet) it will discolor the pot and make it impossible to clean.
(And yes, copper is a nutrient in very small amounts. However, like many minerals, what's beneficial in tiny amounts is poisonous in larger ones. For example, as a ceramic artist I have to be careful with copper glazes in their raw form.)
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Quick Answer about "Is a corroded copper teapot safe?"
National and regional health authorities seem to take it for granted that copper kettles leach toxic amounts of copper, and don't bother to test it, and everyone else seems to ignore them. As such, as long as there's no history of Wilson's Disease in your family, I'd leave it up you.Is it safe to use old copper tea kettle?
Old Copper Kettles Copper kettles manufactured today feature a thin lining of stainless steel, tin or nickel, which makes them safe to use. The metal lining makes these kettles safe to use for boiling, cooking and storing water without the risk of copper tea kettle poisoning.Do copper tea kettles rust?
It only needs medium heat to boil water, saving both time and energy. Copper tea kettles are incredibly rust-resistant, too. You can count on them to keep going for decades with proper maintenance.How do you clean an old copper tea kettle?
Some simple steps that you should follow:Are old metal teapots safe?
Possible Hazard of Metal Teapots Studies have been done, of course, because metal does leach into the hot tea and sometimes that can be dangerous, such as the occasional lead poisoning case (Petit et al. 2003).EXTREMELY Corroded Copper Tea Kettle - Perfect Restoration
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Answer 2
I would recommend not to use it as it might be toxic https://en.wikipedia.org/wiki/Copper_toxicity.
It should however not be too difficult to get copper cleaned up nicely again, the following article gives some good recommendations on how to accomplish this https://www.popsci.com/story/diy/best-way-clean-copper/
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