I was a bit baffled when I read this recipe as to what a ‘tube pan’ was. A check of google tells me that it’s what I’ve always called a ring tin. I thought that an alternative name for a ring tin was a Bundt tin and have never heard it called a tube pan, but it turns out that they’re the same thing. So to clear up the confusion I thought I’d add a photo of a tube, ring or Bundt pan.