<div dir="ltr">Having summarized the article in BDD I will now summarize the earlier article in Techumim. Since there is a great overlap between the two hopefully this will be shorter.<div><br></div><div>The first section is a discussion whether "hechsher keilim" is based on physical evidence or is an abstract concept. For example the laws of Tumah are clearly spiritual and not physical. Going to a mikveh does not do anything physical. Their claim is that hechsher keilim is a physical phenomena. Their main proof that for a mixture of meat and milk one relies on the taste of a kefelia (either expert or regular nonJew). Another proof is that one can use a cold milchig dish for cold meat (Rama doesn't allow but only because of possible problems). The third proof is from the experiment of Ameimar (Pesachim 30b) In particular the Or-Zarua states that hagalah and libun are not gezerot but rather they expel the issur.</div><div><br></div><div>So they conclude that as long as the absorption/expelling is small enough it has no halakhic significance. They then discuss the halacha of "ein mevatlim issur lechatchila"</div><div><br></div><div>They conclude with various quotes from RSZA (not in print) that agrees that one can rely on the experiments when there are other reasons for a kulah. He further is quoted as saying that a Sanhedrin could change these halachot but changing them now would undermine every woman's kosher kitchen.</div><div><br></div><div>They then sen letters to several known poskim. </div><div>R Lior and R. Rabinovich are willing to accept that modern pots do not absorb or expel (more than minimally). However, they both distinguish between lechachila and bi-deved. Basically both allow use the same pots for milchig and fleishig lechachila because it would create many confusions.</div><div><br></div><div>R Ariel points out that the Rama does not allow using glass for both milchig and fleishig even though glass does not absorb. This is because glass is made from sand and so is similar to cheres even though it doesn't absorb. Therefore all metals are in one category and we don't examine inter-category. Creating new categories will only confuse everyone (not clear what he says about plastics) . R Asher Weiss just states categorically that we follow our minhagim and chas veshalom to change whole sections of the SA. Finally R. Arusi agrees that the basis on hechsher keilim is physical, absorption and expelling nevertheless the halacha does distinguish between thick and thin pots and so all metal and glass vessels need hechsher and this is "like" (ke-ein) a gezera from the Torah since the Torah prohibited expelling a taste of issur even though we don't have a ke-zayit within 3 eggs.</div><div><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><font color="#000099" face="'comic sans ms', sans-serif">Eli Turkel</font></div></div>
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