Questions tagged [kashering-kosherization]

Questions pertaining to Kashering, the process of making a kitchen or utensils Kosher and therefore fit for use.

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Seperating gelatin and dairy

According to poskim who hold gelatin is only as kosher as the animal whose bones are used (with whom I don’t personally agree) does the same meat dairy separation Halacha apply? Or is there leniency ...
Kirk's user avatar
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Do non-glass cups/straws have to be kashered after use?

In Halacha, is there a requirement for non-glass cups or straws to be kashered after being used? For example, if a Jew is fleishig, can they drink out of a non-glass cup (or with a straw) which was ...
Kirk's user avatar
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Is it true the Rebbe said you have to have trust when checking For kashrut?

BH Have been checking for Kashrus recently a lot and one guy told me that the Rebbe said there is a point in Kashrus that you have to trust in Hashem that the food is kosher. Is this true and if yes ...
David 's user avatar
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Kashrut of unsalted meat put into freezers

In Halacha, as a general rule, when you have meat which is unsalted, you have to soak it into water every 3 days to prevent the blood from making the meat un kosher. My question is, according to ...
Kirk's user avatar
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Is it true that if you Blend bugs in a mixer Bidieved it’s ok to eat? [duplicate]

BH I heard there is a Halacha if you make a milkshake from fruit and there was a bug inside bidieved than you your allowed to drink from it because a blended bug is not considered a real full bug that’...
David 's user avatar
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What’s the process of checking insects when making wine

BH What’s the process checking for insects when making wine? Is there any videos on this and where does it talk about this in Shulchan Aruch And Halacha?
David 's user avatar
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Where does it say in Halacha that you can double wrap with aluminum and put in traif oven

BH I heard bidieved if your in situation where you don’t have lechatchila a Kosher oven you can wrap the object in aluminum once and then after 2 times after and after you can eat the food as long as ...
David 's user avatar
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Where does it say In Shulchan Aruch That Grains don’t need to be checked so much?

BH I’m trying to check Grains in order to make flour and someone told me that grains them selfs don’t need to be checked so much and could possibly fall into the same category as Oranges which I heard ...
David 's user avatar
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Does anyone know any videos on how to check wheat grains from Bugs

BH Any videos on how to check wheat Grains from bugs before making flour and the type of bugs that could possibly come into wheat grains?
David 's user avatar
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How to Kosher sea water?

BH After you separate the water from the salt if you want to take sea water from the ocean and drink it whats the process of filtering that you have to get to actually drink the water that the water ...
David 's user avatar
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Is synthetic sapphire as kasherable as the natural version? [closed]

I understand that stone may be kashered for dishware. Although expensive, natural sapphire is considered stone. The chemical formula for sapphire is corundum, aluminum oxide, doped with elements for ...
eternalsquire's user avatar
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Rubber be kashered

Can rubber be kashered? From what I understand, to be kashered something has to be heated up in boiling hot water, in the case of rubber, I don’t believe it can absorb and retain heat internally. If ...
Kirk's user avatar
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Is it possible to kasher black stainless steel sinks?

Is it possible to kasher a "black stainless steel" sink? I mean not one that is painted but one that is made with black metal coating, like jewelry. Example
Tremendus Apps's user avatar
3 votes
2 answers
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Why do my countertops need to be "kosher"?

My wife and I iyH will be moving into an apartment that we purchased from non-Jews, and we spent a lot of time investigating different renovation options for the countertops (this type of stone, ...
Shaul's user avatar
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Destroy Coffee Cup (Vayikra 11:33), when fly dies in beverage?

Considering Vayikra 11:33 - Should a [Restaurant] owner who sees their customer’s ceramic coffee cup ☕️ contains a dead fly, break the cup & dispose (or wash it for future customers)? Question ...
חִידָה's user avatar
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Kosher dish transfer? [duplicate]

According to below, we use separate dishes for kosher to avoid transferring "taste". However if we allow butil bashishim in regards to food then how much more so should we allow the same ...
TreeKing's user avatar
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When was kosher certification created? [duplicate]

When was kosher certification created? Another way of saying this question was when did the Rabbis say that it was appropriate to have a governing body (such as the OU, Star-K etc...) which oversees ...
MeirBenPinchus's user avatar
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If dairy and meat come from the same Star Trek replicator, would it be Kosher? [closed]

Apologies for my limited understanding of Judaism, but as far as I am aware, Jewish dietary laws prohibit mixtures of meat and milk. I remember a friend's housemate requiring a second sink and set of ...
AncientSwordRage's user avatar
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Does [Ma'achalot Assurot 17:22] establish any type of cooking Oil is kosher?

We read in Ma'achalot Assurot 17:22 that : The oil of gentiles is permitted. One who forbids it commits a great sin, for he rebels against [the teachings] of the [High] Court who permitted it. Even if ...
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Why does the Torah give so much detail in the War on Midyan?

Moshe Rabbeinu and Israel fought a number of wars. Maybe starting with Egypt at the Yam Suf, but certainly against Amalek, Melech Arad, Sichon, and Og. Only by Midyan, apparently the last war ...
MichoelR's user avatar
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What is halachic rationale for separate Passover dishes?

Why separate dishes for Passover? I understand milk and meat dishes. I understand how hot and sharp can transmit treifness, how "noten ta'am l'fgam" works (I think). It all makes sense. But ...
Mike's user avatar
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Ki'bolo Kach Polto

Why can't a utensil that became trief at, say 150 degrees be kashered with water that is 151 degrees? Why must the water be boiling?
Moshe Hoffman's user avatar
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Should one kasher keilim used with Hebrew National? [closed]

Do Keilim need to be Kashered after being used for Hebrew National hotdogs?
Mosh 's user avatar
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Protein Powder certified kosher but no hescher on package [closed]

A family member bought protein powder which I believed was under OU supervision. It is 100% vegan and has no dairy derivatives which I know means nothing in the kosher world but still. It is missing a ...
Mosh 's user avatar
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3 votes
2 answers
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Does one need to kasher a pot that is kosher in all aspects except that kosher meat that is not glatt was cooked in it?

If one does eat strictly glatt kosher and cooks non-glatt kosher meat in a pot. Later on, a different dish with glatt kosher meat is made. Would someone that adheres to glatt kosher standards require ...
Sam Miller's user avatar
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617 views

May liquids other than water be used to kasher a material?

Hagalah is when water is boiled in a pot and a utensil is thrown in to kasher it. However, if a liquid other than water, say vinegar or oil, or a solution of water and another liquid is used. Can it ...
Chofetz Chaim's user avatar
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148 views

Hagalah Hot Stone

The Shulchan Aruch (451:6) discusses the use of inserting a hot stone into a large pot of boiling water to complete the hagala process. Aside from the 'border-lip' option mentioned in the Shulchan ...
NJM's user avatar
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Nullification of non-kosher utensils or dishes

If an unidentifiable non kosher utensil or vessel gets mixed up with kosher vessels, if the majority of vessels are kosher, it is nullified. [1] If someone makes this mistake a million times, are all ...
Chofetz Chaim's user avatar
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Kashering dishes in a microwave

Can a Microwave be used to Kasher other dishes? For example, to Kasher a metal bowl it could be filled with water and placed on a platter in the microwave for an extended period of time. The water in ...
fileyfood500's user avatar
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Are Double oven Kosher [closed]

I am planning on upgrading my kitchen but and I was wondering if a double oven could be kosher if 1 oven is just meat and one is just dairy.
Moishe's user avatar
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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?
verbatim's user avatar
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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 ...
mbloch's user avatar
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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 ...
DanF's user avatar
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2 votes
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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?
BenBlogBlog's user avatar
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0 answers
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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 ...
mmc99's user avatar
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1 vote
1 answer
191 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 ...
Judita's user avatar
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4 votes
0 answers
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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 ...
ertert3terte's user avatar
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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 ...
Chaim's user avatar
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2 votes
3 answers
556 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.
Yehuda1983's user avatar
1 vote
0 answers
16 views

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 ...
DanF's user avatar
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5 votes
1 answer
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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 ...
DanF's user avatar
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1 vote
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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 ...
Aaron's user avatar
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1 vote
1 answer
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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 ...
Aaron's user avatar
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1 vote
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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 ...
Rachel's user avatar
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7 votes
1 answer
300 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, ...
יהושע ק's user avatar
6 votes
2 answers
211 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 ...
rosends's user avatar
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4 votes
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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 ...
Noach MiFrankfurt's user avatar
1 vote
1 answer
146 views

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 ...
Noach MiFrankfurt's user avatar
2 votes
1 answer
856 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?
DanF's user avatar
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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 ...
Yehoshua's user avatar
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