Question

why does a jacket potato cook much more quicly if you put a metal skewer through it

Answer 1

Answer:

Here's the theory: Baked potatoes typically cook from the outside in, requiring about 75 minutes in a 350-degree oven to cook through. A piece of metal stuck through to its center will conduct heat, thus speeding up the process. ... We baked them all in the same 350-degree oven, rotating them after 30 minutes.

Answer 2

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Answer:The skewer, which has mobile electrons to carry heat through it, provides an alternate path for heat to enter the potato and flow to its center. ...