What is a sherry cask?

About two weeks ago I was in the sherry triangle to host a sherry tasting but also to further investigate the relationship between the sherry industry and the whisky industry, more specifically the definition of a sherry cask as used in both industries. I am regularly hosting tastings with a line-up of sherry and whisky, and there is still a lot of confusion among whisky lovers when it comes to sherry and sherry casks.

I’ve already written an article Sherry and oak on my sherry blog but I thought a new one was necessary, this...