I have had this happen a few times now. What happens is that I purchase a new kitchen item made of stainless steel. When cleaning it, I find out that there is some kind of dark grey residue that comes off of it. The items that have done this are supposed to be used to cook or they come into contact with food.

Is this metalic residue? If not, what is it?

  • Is there an exposed aluminium pan/pot bottom, maybe? Nov 22 '16 at 10:15
  • It's probably cardboard dust from the packaging.
    – GdD
    Nov 22 '16 at 10:16
  • This happens to my pots too sometimes, though mostly older ones.
    – Carmi
    Nov 22 '16 at 11:27
  • @GdD Doesn't look cardboard at all, the residue has a dark grey metalic colour to it.
    – samseva
    Nov 22 '16 at 22:09
  • @rackandboneman The items I bought were made of stainless steel. They were brand new and hadn't come into contact with aluminium.
    – samseva
    Nov 22 '16 at 22:09

It could be stainless steel and abrasive residue created from polishing.

Method for Removal:

Hand wiping with alkaline cleaners, followed by hot water rinsing. May require multiple applications until wipe testing results are satisfactory.



As I said last week in the comments, I've been having this problem too, and I finally think I've worked it out.

It happens with my steel bottom pots and pans. It doesn't happen on my induction stove-top ever. It only ever happens when I use them on the electric, metal-top stove.

Basically, it seems to be metal/rust residue from the electric stove-top, rather than anything from the pot itself. Taking a cleaning rag over the stove-top gets the same gray residue.

It seems we both need a better quality stove.


it is a food safe silicone,used as a manufacturing process coating

  • Hello, and welcome to Stack Exchange. Do you have any more information on this, including a reference? Nov 29 '16 at 14:32

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.