heating core?! my proudest moment

I discovered something while researching cake making...

if you bake a cake that is really deep or over 10 inches wide, you need a "heating core". This helps the cake cook all the way through, because hate radiates out from the center and in from the edges of the pan.

I did not have a heating core, but I McGuyvered it with a (very thoroughly washed and lined with parchment paper) tomato paste can. Worked like a charm!