Uploaded May 2026 | Updated September 2026, 2 weeks ago

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Food colouring can't be used to colour ceramics in the same way that stains or oxides can, but that doesn't make it less useful!

In my experience, most things will burn off completely in a bisque firing, but some coloured pens/pencils will use red iron as one of their colourants. It can be a cheap way to get a pen/pencil that can mark clay in a way that survives the firing, but that's only an upside if you were expecting it!

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