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Koshering a Kitchen: Difference between revisions

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# Any vessel that is usually used for cold can be koshered with cleaning it well with cold water.<ref>Shulchan Aruch YD 121:1. Rashba Teshuva 1:372, 817, 3:279, and Ran Pesachim 8b s.v. aval hold that we follow the majority of the uses of a utensil to determine how it should be koshered.</ref> Ashkenazim initially are strict for the opinion that it was used for non-kosher cold it should be koshered with hagalah.<ref>Rama 451:25, Mishna Brurah 451:149</ref>
# Any vessel that is usually used for cold can be koshered with cleaning it well with cold water.<ref>Shulchan Aruch YD 121:1. Rashba Teshuva 1:372, 817, 3:279, and Ran Pesachim 8b s.v. aval hold that we follow the majority of the uses of a utensil to determine how it should be koshered.</ref> Ashkenazim initially are strict for the opinion that it was used for non-kosher cold it should be koshered with hagalah.<ref>Rama 451:25, Mishna Brurah 451:149</ref>
==Hagalah==
==Hagalah==
# A pot that is usually used for cooking and sometimes used without liquids, according to Sephardim can be koshered with hagalah since we follow the majority of its use.<ref>Shulchan Aruch 451:6</ref> Initially Ashkenazim are concerned even for a minority of uses.<ref>Rama 451:6, Mishna Brurah 451:45</ref>
# A pot that is usually used for cooking and sometimes used without liquids, according to Sephardim can be koshered with hagalah since we follow the majority of its use.<ref>Shulchan Aruch 451:6.
* The Gemara Pesachim 30b concludes that knives need hagalah for pesach even though it discussed possibly needing libun. What was the reasoning of the gemara? The Ran Chidushim 30b s.v. vhilchata writes that the knife is sometimes used over the fire yet it can be koshered with hagalah. Either because Rashi and Raavad hold that chametz is hetera baala. Or according to the Ramban that it is isura baala we only need hagalah because we follow the majority of uses of the knife. Meiri Pesachim 30b s.v. hasakinim agrees with the second approach.
* The Rashba responsa 1:372 writes that we don’t need to be concerned for a minority of uses because otherwise how could the Torah establish different categories of utensils that some are used for cold, some for hot liquids, and some directly with the fire. Rather we only concern ourselves with the way that the utensil is normally used. This is reiterated in 1:817 and 3:279 and Ran Pesachim 8b. The Bet Yosef understands that this is also the opinion of the Rif Pesachim 8b and Rambam Machalot Asurot 5.
* However, the Ravyah holds that we’re concerned even for a minority of uses of a utensil. Tosfot Avoda Zara 74b s.v. darash, Hagahot Maimoniyot (Hilchot Hagalah), and Tur 451:6 agree. Shulchan Aruch 451:6 follows the Rashba and Rama 451:6 is concerned for the Ravyah.
How does Rov Tashmisho work? The Maharam Chalavah Pesachim 30b s.v. vhilchata writes that following the main use of a utensil is only effective if we’re unsure if the utensil was ever used for the other type and we’re allowed not to be concerned for an abnormal use. This is also the opinion of the Meiri Pesachim 30b s.v. hasakinim and Raah cited by Nemukei Yosef Pesachim 30b.
* However, the Ran Chidushim Pesachim 30b s.v. vhilchata absolutely holds that we follow the majority of uses even though it is certain that it was used for the other type of use. Ramban Avoda Zara 76a s.v. umah sh’amru and Rashba a”z 76a s.v. vkatav agree. This is also implied by Rabbenu Dovid Pesachim 30b s.v. vhilchata. Kaf Hachaim 451:100 follows that approach and cites many who agree including: Sharei Kneset Hagedola 451:6, Pri Chadash, Olot Tamid, Eliya Rabba 451:17, Chok Yakov 451:31, Bet Dovid 212, Gan Hamelech 53, Erev Hashulchan 451:11, Chemed Moshe 451:12, and Shulchan Aruch Harav 451:31. How can that be explained?
* The Rashba responsa 1:372 writes that the reason that we can follow the majority of uses is even though it is known that it was used for another type of use but after 24 hours the absorptions are negative tasting and the entire need for koshering is rabbinic. The rabbis established to follow the majority of uses. This explanation is reiterated by the Rama Mpano 96.
* Chazon Ish OC 119:15 points out that according to this answer it can’t be used for a spice grinder since a dvar charif extracts tastes even though they weren’t used within 24 hours. However, the Mishna Brurah 451:80 seems to apply the rule of rov tashmisho even to a grinder. Chazon Ish answers that it is referring to a concern that it was used for chametz but we don’t know that it was ever used for chametz otherwise we couldn’t use the majority of uses.
* However, there is a small group of rishonim that imply this even for ben yomo utensils biblically. The Machzor Vitri Hilchot Pesach ch. 4 writes that the torah established the categories of koshered based on majority uses. [https://books.google.com/books?id=CcdVDwAAQBAJ&pg=PT180&lpg=PT180&dq=%D7%A8%D7%95%D7%91+%D7%AA%D7%A9%D7%9E%D7%99%D7%A9%D7%95+%D7%94%D7%92%D7%A2%D7%9C%D7%94+%D7%A1%D7%91%D7%A8%D7%90&source=bl&ots=RhBy-LvyzG&sig=ACfU3U1MLaZxsX1byp3l0bG8-4nlp0KLkQ&hl=en&sa=X&ved=2ahUKEwjj7qOu2c_hAhWLTd8KHZDeCJIQ6AEwB3oECAgQAQ#v=onepage&q=%D7%A8%D7%95%D7%91%20%D7%AA%D7%A9%D7%9E%D7%99%D7%A9%D7%95%20%D7%94%D7%92%D7%A2%D7%9C%D7%94%20%D7%A1%D7%91%D7%A8%D7%90&f=false Rav Aryeh Idnason in Haotzer v. 15 p. 189] explains that either the Machzor Vitri holds that taam kikar is derabbanan or that the Torah categorized utensils based on the majority.</ref> Initially Ashkenazim are concerned even for a minority of uses.<ref>Rama 451:6, Mishna Brurah 451:45</ref>
#Usually it is necessary to kosher a pot on the inside and the rim but if it is used on the outside of the pot such as a ladle it needs to be koshered on both sides.<ref>Magen Avraham 452:11 quoting the Maharil</ref>
#Usually it is necessary to kosher a pot on the inside and the rim but if it is used on the outside of the pot such as a ladle it needs to be koshered on both sides.<ref>Magen Avraham 452:11 quoting the Maharil</ref>
#If one has a big pot and can't put it into another pot it should have a rim added to it and when the pot boils up the water will splash onto the rim and kosher it or one can boil a pot and drop a rock in so that the pot boils over the rim.<ref>Shulchan Aruch 452:6</ref>
#If one has a big pot and can't put it into another pot it should have a rim added to it and when the pot boils up the water will splash onto the rim and kosher it or one can boil a pot and drop a rock in so that the pot boils over the rim.<ref>Shulchan Aruch 452:6</ref>