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Old 04-12-2007, 04:23 PM   #1
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Rainbow like patina inside SS pans?

I'm getting a rainbow discolorization inside my all-clad and calphalon triply over the hot spots where the burners (electric) contact. I'm not going above medium-high heat. Is this normal/regular? Do I need to use a differant cleaner besides dishsoap? Should I stop being fussy?

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Old 04-12-2007, 04:38 PM   #2
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Try some Barkeeper's Friend. You should always have some on hand for SS.
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Old 04-12-2007, 06:43 PM   #3
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It's normal...barkeepers friend, or stainless polish.
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Old 04-27-2007, 12:13 AM   #4
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Wow, I'm a believer! barkeepers friend is awesome stuff! My sink's never been this shiny!
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Old 04-27-2007, 05:31 AM   #5
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Quote:
Originally Posted by Michael Cook
Wow, I'm a believer! barkeepers friend is awesome stuff! My sink's never been this shiny!
Any idea whether Barkeeper's friend is available in the UK?

My SS saucepan gets those rainbow hues, but it's pristine clean out of the diswasher so I don't worry about it.
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Old 04-27-2007, 11:46 AM   #6
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" You are visiting Denby UK You are on the UK site ... we recommend a useful tableware cleaning product called 'Barkeeper's Friend' (available in good housewares stores and cookshops) ..."

In the UK is most likely called "Barman's Best Mate" or some such thing!
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Old 05-15-2007, 04:50 PM   #7
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Hmmm... according to Alton Brown (gear for your kitchen) the rainbow patina comes from too much heat. Guess I'll preheat less.
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Old 05-15-2007, 04:54 PM   #8
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Barkeepers friend is great for getting out dark discolorations from items being burned. For the rainbow discoloration, you can also use lemon juice (and I think vinegar, as well).
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Old 05-17-2007, 10:12 PM   #9
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Alton's right...

Hey there...I've had the same thing happen in my Calphalon SS and All-Clad....as other's have said, Barkeeper's Friend does miracles to get rid of the rainbow. Anyway, I noticed you had an electic stove. So do I, and I believe it has caused the problem. I bought an infrared thermometer to measure the surface temperature of my pans after reading the Alton book. I found that my electric stove on Medium made my pans reach close to 575 degrees! I now use Medium as High and adjust down as called for, so Medium Low is my regular temperature used. No more rainbow patina and I don't have to worry so much about inadvertent burning of food :-).
Nico
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Old 05-17-2007, 10:32 PM   #10
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While heat was probably the culprit in this case, cooking starchy foods such as rice or potatoes can also result in a rainbow discoloration. Either way, BKF will do the trick.
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