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ErikTheAngry t1_jbaoe0o wrote

It'll probably stop the mess, assuming it doesn't tear.

Though personally I'd be worried about fumes.. confined between the pan and the element the temps could be considerably higher than the surface of the pan itself (not unlike how the temps rise when you put a lid on a pot). Aluminum fumes are no joke, which start to be a concern around 600C. Of course at those temps, silicone would just be a bubbling mess too.

Foil won't do anything to protect the ceramic top from a heavy piece of iron though. The silicone mat will provide a bit of padding to help avoid scraping the ceramic, and it offers a little leeway in setting down the cast iron.

All while being reusable.