2

Sometimes my flatware leaves grey streaks in butter. I've only seen this with knives in cold butter. They claim to be stainless steel which I would think wouldn't do this. If I recall they were the very best flatware Target had to offer ;) Is something leaching into my food?

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  • 8
    Clean your knife. – Batman Nov 30 '14 at 17:10
  • 2
    Might this be a knife shaped object made of aluminium, that has been bin the dishwasher? – rackandboneman Mar 1 '18 at 20:38
  • It could be (black) rust. Which means you put it in the dishwasher way too dirty. Or it sat dirty in the sink for a month... – Mazura Dec 28 '18 at 0:22
13

The photo suggests you are using a knife that has serrations. Dirt can get trapped between the serrations. This is not likely to be metal from the knife, but the dirt.

  • 4
    I'd wager its a bit of char from a piece of toast, jammed up in the serration. – Preston Dec 1 '14 at 1:41

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