With the exception of a few posters, most of you are getting some things wrong. Regarding those who claim Shulchan Aruch says it’s mutar, there are two seifim frequently quoted, both in Yorah Daiah: 135:13 (wine only penetrates kdai klipah) and 137:4 (you can store water or beer in such vessels). The first is in a simman talking about prepping a new cask with wine before use, and the Shach says that if you know for sure it contained wine for a 24-hour period, then kdai klipah doesn’t work and you’d need a far bigger shiur of bitul. In the second seif, the Taz says the reason it’s mutar is because the taste of the wine went bad in the walls and so it’s pagum. But what if sherry makes scotch taste better? To address such reservations, Kashrus authorities came up with a collection of assumptions so as to pasken l’kulah. Only problem is, I’ve discovered those assumptions simply are not true. I just happen to have written a paper just over a week ago about this. The objections I raise are not a rehash of the same arguments seen everywhere else; they are mostly new. A friend of mine posted it on his blog. Please read it. Then let’s have a serious discussion.
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