Reply To: Is Sherry Cask Scotch kosher?

I read the 118 page sefer a few years ago
If I remember correctly, the main argument used against the heter is that when it was written the assumption was that the cask didn’t do much. Then there was a cask shortage and distillers used different casks for the first time.
It was then noted that the other casks gave an inferior product to the point that it affected sales. Distillers since then are willing to pay the price of the cask. This proved the sherry cask was important to the process which is a definite problem in terms of kashrus.