One reason many people shy away from copper cookware is the price but the other oft-cited reason is the maintenance. Copper pots will quickly lose their shine and if you care about such things, you would need a Downton Abbey-sized crew to keep things ship-shape. Me, I actually don't care for shiny copper and the few pieces I own have taken on a lovely, varied, matte patina. Still, they occasionally need a little cleaning up, so I was fascinated to read an article on the Kaufmann Mercantile website that recommends two very unexpected ingredients to clean copper.
In an interview on the Kaufmann Mercantile blog, Mac Kohler of Brooklyn Copper says:
My go-to recipe for polishing copper is equal parts kosher salt and ketchup. Squeeze out a big glob of ketchup and add salt in equal measure. Spread the solution on the copperware and work it with a soft cotton or hemp cloth--not polyester or synthetics, as that will scratch the surface. Buff it out with another natural soft cloth. If you have dark spots on your copper, it is likely a carbon stain from cooking something starchy, like pasta, The water has been taken out of the carbohydrates, creating just carbon, which is black. Carbon and copper bond easily and these spots require a stronger commercial solution. If they don't come off, they need to be mechanically buffed, essentially breaking off the carbon on the copper surface. I've heard of people using a shoe buffer or an orbital sander with a buffing attachment.
I gave it a try on my favorite copper tart tatin pan (which I use for many other things besides tart tatin!) and it worked pretty well. The pan still had dark places here and there but like I said, I'm not interested in brand new, shiny penny look. And I loved the fact that I could whip this together with some very basic kitchen ingredients that also are non-toxic.
→ To read the entire interview with Mac Kohler, visit the Care for Copper post on the Kaufmann Mercantile site.
Do you have any copper cookware? How do you clean it?
Related: A New Favorite: The Windmuhlenmesser Breakfast Knife
(Image: Kaufman Mercantile)
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I remember learning this an how to shine silver in girl scouts of all places.
I use left over lime halves, dip it in salt, and then rub over the copper, while sqeezing whatever juice is left over... Shines the copper, in my copper bottom cookware, pretty well.
I never drink soda, but if we have people over and there's part of a 2L bottle left, I stop the sink and pour the leftover soda in and float/set my copper-bottomed pan in the sink overnight. The next morning I take the pans out, turn them over and sprinkle kosher salt on them to scrub any tricky spots, but usually there's little if any to scrub. Easy peasy! Takes almost no elbow grease.
And we eat this stuff?!!!
Lisa, it's just the acid in the ketchup. Vinegar would work as well, but ketchup is easier to use because it's thicker.
...and you can do the same with brass!
Any food acid works - Vinegar (in the ketchup), limes, lemons etc.. Not sure why coke works for copper, but we did the same thing as @RachH as an experiment in grade school with a penny as a way to demonstrate why we shouldn't drink coke.. didn't work!