I'm kashering a number of non-kosher, metal utensil with a kosher pot. If heat is a mechanism through which things can become non-kosher, does kashering my utensils in the pot (via Hagalah) make my pot non-kosher? If not, why doesn't the treyf-ness transfer?
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I assume the vessels are more than a day old? In that case there is no treif left to transfer. It all tastes bad by then.– Double AA ♦Oct 23, 2015 at 1:24
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Interesting...I thought the reason for the hagalah in the first place was to remove the treif from the vessel. If there is no treif left, why do we do hagalah?– akobre01Oct 23, 2015 at 1:57
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So we don't come to use a less than day old pot.– Double AA ♦Oct 23, 2015 at 3:36
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1Possible answer here: judaism.stackexchange.com/a/71034/1516– SAHMay 6, 2016 at 17:26
2 Answers
If it's past a day, I believe the kashering pot is fine without soap. If the treife utensils were used within a day, that is a different story.There are some caterers who have boiled treife tensils in a toxic solution before kashering them. However, Rav Blumenkranz zt"l writes in his pesach book that this should not be relied upon.
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Is Rav Blumenkranz' comment on toxic solution specific to Pesach or meant to apply year-round?– Yehuda WOct 28, 2015 at 13:08
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Rav Blumenkranz zt"l wrote his comments regarding caterers whom have kashered treife facilities for kosher events. Oct 29, 2015 at 9:55
Your concern is that the non-kosher taste reenters the utensils or enteres the pot. If you are concerned about this (despite the valid comment above about a day-old taste being rotten), put soap in the water before you put the non-kosher utensils in the pot. That way, any non-kosher taste mixes immediately with the soapy water. That renders any such taste non-edible, which means it is not food, which means it is no longer non-kosher and can not make the pot (or anything else) non-kosher. This works also if the non-kosher utensils have been used within the past day. As I understand it, caterers use this approach often. (Perhaps there are caterers reading this who might chime in.)