Questions tagged [kashering-kosherization]

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4
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1answer
48 views

Does a knife sharpener need to be considered kosher or kashered?

Does a knife sharpener need to be kosher? Would I need separate sharpeners for milchig and fleishig knives? Does it to be treated like any other kitchen utensil and need kashering?
4
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2answers
219 views

Can one kasher anodized metal?

Anodized metal is metal with an increase in the thickness of the natural oxide layer on the surface of metal parts. Is there any issue kashering it, or is it basically like metal with a layer of rust ...
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2answers
228 views

Is immersion of utensils (tevila) valid before koshering (hagala)?

dinonline (here) writes that The hagalah [koshering of non-kosher utensils] should be done before the tevila [immersion in a mikve]. Are there other sources saying so? Are there sources saying ...
2
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1answer
123 views

The science behind making liver kosher

It seems that salting and soaking liver is insufficient to release the blood sufficiently to make it kosher. It needs to be broiled (or is there some other method that also works?) What's the science ...
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2answers
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Kashering a microwave

How can I kasher a microwave?
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3answers
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What does the term “mohel” mean in Hilchot Melicha (salting)? [closed]

In Siman 69:20, there’s reference to a “ma’aseh Rashi”, in which Rashi rules that what comes out after shiur melicha is “mohel” and not “dam”. What does “mohel” mean here?
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1answer
813 views

Forms of Kashering a knife

I remember hearing that a knife can be kashered (from being treif) by sticking it in the ground. But I also know you can use the traditional kashering methods - Hag'ala (completely submerging the ...
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0answers
58 views

Knife Becoming Unusable By Threatening Someone With It

I have heard that if a knife is used (even for pretend) to threaten someone it is treif to use unless Neitza is done to it (being stabbed in the ground 10 times). Does anybody know of a source for ...
2
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1answer
65 views

Koshering the celim that milchig bread was baked in

In Shulchan Aruch Yoreh Deah Siman 97 it says that it's ossur to bake "milchig bread" -- lest you come to eat it with meat (although if it's made in a small amount or with a change in it's look from ...
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1answer
81 views

Kashering glass used for hot food (Askhenazi custom)

Dears, I am a little lost on the topic of kashering the glass. I read there is a custom not to kasher glass (for the Askhenazi), but I also read they do kasher glass. Some just by washing it, some by ...
6
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1answer
642 views

Microwave on Pesach

A friend told me that his family will kasher his microwave in general (ie if non-kosher food was heated up in it) but will not kasher it for Pesach, letting it lie dormant instead. Does anyone have a ...
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3answers
4k views

Kashering pot from meat to dairy/parev?

I know I've learned somewhere that you can't kasher a meaty pot for use with dairy (except for Pesach), but I can't find a source for it now. Can anyone provide a source? (The sauce would be a light ...
6
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1answer
90 views

What is the halacha regarding recooking livers?

Years ago, I would buy a box of raw chicken livers and roast them myself. On the box, there was a note that said that once roasted, it could not be recooked. Recently, I found already roasted livers ...
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0answers
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Why does the Chumash wait until Mattos to discuss the laws of Kashering vessels?

The main place the Chumash discusses laws of Kashering is after the war with Midian. One of the explanations I've seen is that this was the first battle where they captured items from a country which ...
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3answers
307 views

A drop of milk gets into the chicken soup, can one still eat the soup? [closed]

I think it has something to do with the 1/60 rule but I don't know what that is.
6
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1answer
241 views

Kashering non-Kosher meat + “minimizing a transgression”

Halacha has a strong tradition of "minimizing a transgression" when doing something forbidden, for example taking the shortest route possible when driving on the Sabbath. Applying the same logic, ...
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0answers
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Choosing a microwave oven (e.g.) for ease of kashering

As far ask I can tell, I have a new twist on the already abundant microwave oven literature here at Mi Yodeya. So please be not quick to mark this question a duplicate. My question is this. I am ...
5
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1answer
81 views

What is the status of water used for Kashering?

If one kashers a pot by boiling water in it (and throwing rocks in so it overflows) or kashers silverware IN a pot, what is the status of the water afterwards? [I see that water can acquire some ...
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0answers
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What methods can be used to kosher meat besides salting and roasting? [duplicate]

There are several people I know that are on a strict no-salt diet. The only method to make meat and chicken kosher without salting that I know of is roasting. This method is limiting. Not everyone ...
5
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1answer
1k views

Can one “pickle” meat to make it kosher?

Most of the meat koshering processes that I have read say that one should salt the meat and put it on a board to let the blood drain out. Then, you rinse off the salt. I'm wondering if the salting ...
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2answers
106 views

Source for Hiding or Locking Away All Non Passover Vessels

Bit of a debate with someone. I never saw my Sephardic family make a special room to lock away all chameitz dishes. Shulchan Aruch Orach Chaim 451:1 Ceramic dishes that have been used for hametz ...
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3answers
178 views

does kashering require the vessel to be unused for 24 hours (ben yomo)?

If someone is going to be kashering via hagala or by libun does the cleaning of the items prior to kashering require the vessel or utensil also be left unused for 24 hours? If yes, why?
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1answer
66 views

May One Kasher Utensils During Pesach?

Let's say someone has planned to be away from home during Pesach but finds out that his trip will be ending early and he will be home and needs to cook in his house. Can he kasher his utensils during ...
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2answers
302 views

Why do you have to kasher kitchen counters for Pesach?

If you don't use your countertops for either kli rishon or sheine, why do some require them to be kashered for Pesach?
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0answers
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Please help a new giyoret kasher her kitchen [closed]

Okay so I've done quite a bit of reading on how to kasher, on what items can and can't be kashered, and how to maintain a kosher kitchen. I have an appointment with my rabbi to come over and help with ...
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2answers
108 views

Earliest sources for the hot-rock method of hagalah

What is the earliest source explaining how to do hagalah? What is the earliest place we see detailed instructions for the hot rock method as opposed to the clay/dough method? To elaborate: If you ...
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1answer
954 views

Kashering enamel-ware

How does one kasher enamelware like Le Creuset (if it is at all possible)? Note: enamelware cooking implements are typically cast-iron with a glazed enamel covering most of the of the surface, except ...
13
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2answers
642 views

Why does one need to kasher burners on a stove for passover?

I don't use separate burners for milk and meat during the year, nor do I think there's any reason to do that. So why the need to kasher burners before passover?
2
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1answer
188 views

Self-Cleaning an Oven to Kasher If Food Residue Remains

From http://www.chabad.org/library/article_cdo/aid/623729/jewish/How-do-I-kosher-an-oven.htm: "If your oven is of the self-cleaning variety, koshering it is fairly simple. All you need to do is self-...
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1answer
2k views

Knife sharpening - can it be done anywhere?

Can you take a Challa knife to any knife sharpener or would you have to Kasher it after it is sharpened? Would there be a difference if it is a meat or cheese knife?
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1answer
307 views

Does toasting Thomas's English Muffins make that toaster dairy?

Thomas's English muffins contain whey from a dairy source. Does toasting the muffin make the toaster dairy? Concern: Is the amount of dairy in the muffin less than 1/60 of the ingredients?
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1answer
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Kashrut of second-hand silverware

Note: I've just emailed my rav to request a psak, this question is purely to explore the halachic background of the issue. Does second-hand silverware require both tevilah and kashering? If one is ...
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3answers
740 views

Toasters in motels / cabins

Some motels / cabins provide toasters - the "retro" 2-slice toaster that projects the hot toast into the air when its done (and, perhaps sounds a bell, too, if it still works!) The toaster is clean (...
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2answers
303 views

Order for tevilah and kashering

This is an extension of this question. If one purchases used keilim from a non-Jew which would require both tevilah and kashering, which order is prescribed: tevilah then kashering or kashering then ...
4
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1answer
290 views

If I left my kitchen under the control of someone who is a Gentile or not Shomer Shabbos, is it still kosher?

If I left my kitchen (or set of kosher dishes, etc.) with someone who is a) not Jewish or b) Jewish but not shomer Shabbos--in such a way that they could access it and hypothetically do anything they ...
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Can Microwaves ever need Libun?

Very often microwaves have food splattered all over them. If the oven were to need to be Kashered would the spots that had food on them need Libun since they absorbed food directly (without a liquid ...
4
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1answer
1k views

Can an induction hob be kashered on Pesach?

Induction cooking involves an alternating magnetic field in a coil underneath a smooth glass/pyrex surface. This alternating field induces eddy currents in an iron pot placed on the hob. In turn, ...
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2answers
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Kasher keilim for chadash?

If one holds that chadash is assur chutz l'aaretz (or is in Israel), and accidentally cooked a chadash product, would the taam of the chadash that is absorbed in the keilim be a concern, and would you ...
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0answers
1k views

Kosher or not: hind-quarters of sheep & cow?

Would some kind person advise me on the Halachic status of the hindquarters of a sheep or cow for kosher consumption on the table. It is my understanding that a leg of a lamb, for example, may be ...
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0answers
41 views

What parts of an animal require kashering prior to eating?

I assume that the reason for koshering meat is to get rid of the blood. If that is the case, if someone eats gribenes, which are fried chicken skins, do the skins need to be koshered? What if one ...
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3answers
320 views

How many degrees of separation from food does one have to kasher?

I understand that the sink, the dishwasher, and sponges, etc. all need to be kashered, presumably because they touch things (plates, utensils) that also touch food. But how many degrees of separate ...
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1answer
55 views

Kashering earthen ovens

I see that people still make earthen ovens, however, before making one I want to see if it theoretically can be kashered. I know that earthenware vessels cannot be kashered (I heard that it has to ...
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Can you use a not kosher knife sharpening stone/wheel [duplicate]

I learned the the sharpening stone kashers the knife But are there any sources regarding the use of a sharpening stone/wheel that was used for non kosher knifes (possibly used even when dirty knives)...
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1answer
105 views

Is bleach equivalent to boiling water for kashering? [duplicate]

It is indicated by rabbinical authorities to kasher utensils by dipping them in boiling water. This is because boiling water kills bacteria and yeasts, and removes absorbed flavors. Bleach can do the ...
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0answers
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Koshering canning jars

If someone cans using Ball brand glass canning jars (and new lids are used every time, so nothing to worry about with those), In the normal canning process, the jars are boiled to sterilize them prior ...
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0answers
143 views

Kashering a stove

The common custom I have noticed is for people to use the same stove top for meat and dairy. However, people also claim you need to kasher a stove top before use. How are these two positions not ...
5
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1answer
135 views

May non-kasherable items be put into kosher service if they arrived new-in-box?

I understand that glass and ceramic are not kasherable but they still are by far the most convenient and least expensive materials for dishes and cups. If these vessels were purchased new-in-box, it ...
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0answers
128 views

Kashering a kashering pot

My family, after boiling water and pouring it into the sink to kasher the sink, then reboils that pot and causes it to overflow in effect kashering itself. Is there any source to be required to do ...
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3answers
347 views

Do you have to re-tovel non-Pesach dishware after buying it back?

"Utensils which are bought from a non-Jew, even if they are brand new, require immersion in a kosher mikveh." --From Weekly Halacha: Selected Halachos Related to Parshas Vayera by Rabbi Doniel ...