I picked up this vintage 3D Nordic Ware pan and am having trouble finding instructions for this style pan.
There is a hole in one shoulder to let steam escape. There's a little lip and the 2 pieces fit together, but don't lock or anything. I know a dense cake like pound cake works best for 3D standing cakes and to bake in laying down with the steam hole up, but that's it. How full should I fill the bottom half? Tie it shut with string while baking, or will it stay together on it's own? Any other tips?