Or like any good cook, you know when, where and how long you can hold on to a hot panhandle.
I worked in a kitchen for a while as a teen with my mom who taught me everything about cooking. One of those skills is a cook's unnatural ability to withstand a lot of heat just before the point of getting burned.
My grandmother would take out loaves of bread (in a metal or glass bread pan) out of the oven with her bare hands. I don't know how she did it, but she never got burned, and also made the best grandma bread ever.
Callouses and timing .... it's the same principal as those Polynesians who can walk over hot coals. They are able to withstand a bit of pain and they know how long to hold it.
If your grandma wanted she could have been able to do a hand stand walk over hot coals .... while baking bread.