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From: ark@alice.UucP (Andrew Koenig)
Newsgroups: net.cooks
Subject: Re: clean copper pans with ketchup!
Message-ID: <4965@alice.uUCp>
Date: Wed, 12-Feb-86 14:04:31 EST
Article-I.D.: alice.4965
Posted: Wed Feb 12 14:04:31 1986
Date-Received: Fri, 14-Feb-86 01:48:08 EST
References: <4083@glacier.ARPA>
Organization: Bell Labs, Murray Hill
Lines: 9

> Conclusion:
> Ketchup is the most cost-effective way of these four to clean copper.
> Vinegar doesn't work at all, Wenol costs a fortune and doesn't work as well
> as ketchup, and Twinkle costs about 3 times as much for the same cleaning
> power.

Try a mixture of vinegar and salt.

Also, "Cameo" brand copper cleaner works well.