Sometimes when I cook with high heat there are some black flakes. What is this?
1983624
This is a teflon product. It is safe to use for cooking at temperatures below 470F (245C). When teflon is heated to 660F (350C) it begins to break down, releasing fumes that can cause "polymer fume fever" - flu-like symptoms that are relatively quickly reversed in humans. Open flames can easily exceed this break down temperature and so open flames should not be allowed to touch the mat.
1983625
You are suppose to Cook at not higher than 500 dgrees with the sheet. So it could be the problem. Retry it againat this temp. Hope this is helpful Edmonde
1983626
Might be some burnt on residue from your previous cookout. Make sure you wash you sheet on both sides real good after each use with warm soapy water
1983627
You are suppose to Cook at not higher than 500 dégrees with the sheet. So it could be the problem.Retry it againat this temp. Hope this is helpfulEdmonde
11415
I have not experienced that but my guess would be too high cooking temperature and/or overcooking.
466375
I have cooked in mine several times and I have dark stains. I think it may be normal
1781992
Can you describe in more detail what you mean by "burned?" The pot is titanium so it has a very high melting point. If you cook over a dirty flame it will get black like anything.
1572886
Terry I have never seen a black residue come off of any steel pots I have ever owned. So I have no idea what it is. Sorry.
1911275
The metal covers gas burners, so there is no or minimal heat coming through the center hole. This should also be true for electric burners. No flaking in 6 months of regular use.
1937964
Not that I can tell. It blackens up my pots. How I get around that is I take some aluminum foil and wrap the bottom of the pot/pan and when done I throw away the foil.
865135
I've had a similar experience. I suspect it has to do with minerals in the water. Assuming it comes from your tap water, it should be safe. If you really think this a problem then you could try using distilled water. I'm not a chemist, but the heating surface appears to be Teflon or something similar. So I typically remove the discoloration with mild soap and water, the sooner after it's cooled enough the better, or with some vinegar. As for safe, I use my regularly and have had no problems.
1648864
I think it might be some kind of Teflon but not sure. I truly love this item. I ended up buying 3 of these for some friends of mine
945689
Actually, I don'tworry about it. Clean the inside with a scotch bright type sponge. The black outside of the cup is inevitable, but actually helps conduct heat. All my cookwear has blackend exteriors.
141776
Mine does have some black stuff marks on it from being used for a long period of time
1366503
No there shouldn't be black spots. 2 things could be the issue. 1. Manufacturer defect in the chem process or 2. They are imposters that were made by a far less superioir Chinese company. I hope for you it's not number 2. I would try to exchange them.
88262
I didn't realize you have black. Ours is white and we sometimes get drip marks from either food (we might put our colander in the rack when the counter is crowded or fresh vegetable after we have rinsed them) or from soap residue when I get to quick in the rinsing process.
1575287
The reason you have black spots is because the stainless used on the cook surface is 202. The 4xx grade is generally accepted as cook-grade. You should save up the cash to purchase All-Clad
21417
That's probably ok. I ended up ruining mine be repeatedly heating it without anything in it (I kept getting the burner knobs mixed up). Eventually the enamel coating popped off the iron core. So there is some temperature sensitivity in the enamel coating. Granted, I was stupid. I should have been more careful. :(
1877988
Sounds like calcium build up. Do you have hard water in your area? I have used vinegar for that problem but not for anything that is silver (turns it black).
795912
I have not had that problem. I guess I might try spraying it with Pam or other cooking spray. Good Luck!