Questions tagged [kashrut-kosher]

Kashrut (also kashruth or kashrus, כשרות or כַּשְׁרוּת) is the set of Jewish dietary laws.

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Is a genetically modified pig organ in [duplicate]

If you are unaware, doctors recently performed a surgery in which they added a genetically modified pig kidney into a living person. I was curious, does this violate laws on kosher? Would it be ...
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Can a volcano, geyser, or hot spring become treif?

All of these things are at a constant hot temperature. If a pig (or substance used for idolatry, like Yayin Nesech or idolatrous water) falls (or is intentionally placed) into one, can you drink or ...
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Farming with excrement or remains of unclean animals

What if any prohibitions are there on the intentional use of excrement from unclean animals as fertilizer for crops? Must it be buried, for example? Does the same apply to the intentional use of ...
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NYC Tapwater filter

I recently moved to NYC and am concerned about copepods etc. in the tap water. I can't install a fancy under-sink filter nor do I want to refill a Brita pitcher all the time. Are there any other ...
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Why no issur hana'a on leather from non-kosher animals?

In the second perek of Maseches Pesachim, there's a sugya dealing with a machlokes between Rabbi Abahu and Chizkiya regarding whether there is an issur hana'a in addition to issur achila regarding all ...
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Does a fish and chip takeaway service need any kashrus or Jew to light the deep fryer to make it bishul Yisroel?

Does one need bishul Yisroel for a fish and chip chain takeaway if it doesn't require an oven, as well as the fish is kosher being haddock or cod with batter, i.e., not breadcrumbs. As well as bishul ...
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Shechita only during the times of the Beis Hamikdash

Can someone point me to where in the Talmud there’s an opinion that shechita is only required during the times of the Beis Hamikdash?
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What is the kosher status of quail and pheasant and other similar birds? How do they differ from turkey?

It was mentioned somewhere that we didn't have a mesorah for turkey, but somehow it became accepted as a kosher bird within the Ashkenazi population. I'm wondering what the status of quail and ...
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Did early-20th-Century poskim speak to reliance on ingredients lists on labels?

It seems to be common knowledge that before the OU hechsher on food packages, American Jews frequently relied on the ingredients lists on labels to identify kosher food. Did poskim of the day oppose ...
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313 views

What is this "vvk" or "AAk" hechsher?

A dietary supplement claims to be kosher: The Ⓥ is probably to indicate it is vegan, and isn't the hechsher of the Vaad Hoeir of Saint Louis, but the ᓫ𝗄 remains a mystery. I've checked all the lists ...
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May one take vitamins without a hechsher? [closed]

I.e, vitamins from big pharmacies. Are there kashrus issues? Must they be certified?
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Definition of Cheese

Jews are prohibited the consumption of Gentile cheese. Now my question is what qualifies as cheese, or what is the halachic definition of cheese. For it cannot be that something is prohibited simply ...
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How do I find "Frum" Authors and their Novels on Amazon Kindle?

I am a big reader. Was only able to find around 30 novels in Amazon Kindle through searching by these 3 authors: Ruth Benjamin, Chaim Walder, & Ruthie Pearlman. Where do I get a full list of "...
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Kuntris in English on Gelatin

A few years ago I saw someone who wrote a kuntris (Torah journal) on gelatin in english. It discussed all the halachic issues with it. I think it was put out a while ago but I don't remember who put ...
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Why was camel milk not unclean?

If the camel is unclean why was its milk drank? https://biblehub.com/interlinear/genesis/32-15.htm
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Halachic dispute over 'Geshtuppte Ganz' (Goose Liver) - Stuffed-goose dish

I was reading the Artscroll biography of the Tosher Rebbe and it writes on p.283 the following: He recalled how his grandfather the Saba Kadisha, had warned him against eating geshtuppte ganz, the ...
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Genesis Chapter 9 : 3 Meaning

Genesis 9 : 3 Every creeping thing which is alive shall be food for you. I have given you all things, even as the green plant. I am a Torah keeper but this verse seems to be contradicting. Can ...
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Leviticus 11:26 Divided Hoof vs Cloven Footed

Leviticus 11:26 even every living thing which divides the hoof, and is not cloven footed, and does not bring up the cud, they are unclean to you; anyone who touches them shall be unclean. What's the ...
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Ancient Jews eating only fish with fins and scales?

“The Pentateuchal Dietary Proscription against Finless and Scaleless Aquatic Species in Light of Ancient Fish Remains” published in the peer-reviewed Tel Aviv archaeological journal on May 24, 2021, ...
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Does the mitzvah to eat shmita produce apply to heter mechira?

i saw an article a few years back, I believe written based on a shiur by Rabbi Shlomo Aviner, promoting heter mechira. Towards the end of the article, he was advocating why heter mechira was ...
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Listing kosher creatures

The Torah [Lev. 11] says that fish must have fins and scales to be kosher -- no need for more specifics. For birds, it has no general rule but specific listed birds are not kosher. Winged things ...
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Why are we allowed to eat flour?

The Torah explicitly says that we may not eat blood because the blood is an essential element in effecting Kaparah (as explained in Vayikra 17:11 among other places): כִּי נֶפֶשׁ הַבָּשָׂר בַּדָּם ...
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Is contamination from lack of kashrut reversible? [duplicate]

We are taught the kashrut mitzvot are meant to elevate our holiness and avoid spiritual contamination. What of an uneducated Jew that for most of his/her life did not keep kosher and eventually became ...
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Items not labeled Kosher for Passover [duplicate]

What halachic concern(s) are there with items which are 100% non chametz and do not contain chametz (e.g. olive oil - or for that matter avocado, cottonseed and whatever other types of oils, pure ...
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How much beer/whisky would one have to consume to be chayav m’doaraisa?

How much beer/whisky would one have to consume to be chayav m’doaraisa? Also why biblically is there a prohibition on liquid chometz if it’s in the form of a liquid and not leavened bread? We know by ...
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Can you eat foods during Passover, if you already opened and ate from the package before Passover?

Let's say that a person opens a jar of pickles that is kosher for Passover, and eats from it during the week before Passover starts. Can the jar still be used during Passover?
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Why are some Matzah labeled as not being kosher for Pesach/Passover?

What brought me to inquire about this topic (besides seeing products as being labeled not kosher for Pesach) was the name Matzah itself. Matzah by definition means unleavened bread. I understand that ...
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Does food absorb a chametz ta'am if there is no heat (or equivalent) involved?

This is a case where I am fairly certain that I know the practical halacha, but don't understand the issues underlying the practice. Let's say you chop up some apples and nuts before Pesach on a ...
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Aged tequila on Pessach

I've noticed that the lists of aged (reposado and añejo) tequila approved for Pessach went from a fairly sizeable number in 5780 down to two in 5781. Someone I know, who is an executive in a ...
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Can a Kohen be a vegetarian or vegan?

It's my understanding that eating meat for a Jew is optional. We are not commanded to eat meat but if we have the desire we may do so as long as it follows kashrut restrictions. On the other hand, are ...
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Why are trace amounts of chametz in milk or eggs bittul before Pesach, but not in spices or quinoa?

(Note: It's entirely possible that one or more of the premises of this question is incorrect; if that's the case, I would very much appreciate any clarification of what the actual underlying halacha ...
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Kashrut Status of Certain Oral Tobacco Products During Pesach

NOTE: I plan to pose this question to a qualified Rav. But first I am trying to think through the relevant issues to get a sense of how one might pasken this. My question is regarding whether snus ...
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Is there any thing in judaism that says cook your food well at high temprature

Is there any thing in judaism that says cook your food well at high temprature
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What are the permitted equivalents of what the Torah prohibits?

The Talmud says that for every thing God has forbidden, He has created an equivalent that is permitted. [Chullin 109b] It then gives a short list of such equivalents, such as marrying your neighbor's ...
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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?
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Mushrooms from the carcass of a non-kosher animal

Some Mushrooms can grow from decomposing animals. Would there be any (kashrus) problems with having mushrooms that grow from the carcasses of non-kosher animals?
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Halachic status of Beefalo

I just learned of the existence of the beefalo: I was wondering: a. Is it considered Kil'ayim (a forbidden hybrid)? b. Is it kosher, that is, can it be slaughtered and eaten (I think this would ...
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Tikkun for Timtum HaLev

Is there teshuva/tikkun for timtum halev (specifically for forbidden foods)? Please cite sources.
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Is fur fleishig?

Is fur fleishig? My thinking is, not edible -> not food -> not fleishig. But I dunno. (This question is pure silliness and not practical.)
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Can water that never touches food have a (non)kosher status?

I recently read the OK "Kosher Spirit" magazine, including an article about canned vegetables and kashrut concerns. The article reviews the steps in the production of canned vegetables and ...
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Why must animals be conscious when slaughtered?

EU court rules states can mandate stunning animals for slaughter reports: Animal rights activists had pushed for the ban which could prevent kosher and halal ritual slaughter which requires livestock ...
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1answer
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Are frozen organic blueberries kosher?

Do frozen organic blueberries require certification / checking for insects? Apparently, according to the CRC and Star-K, frozen blueberries should not need kosher certification. Is this also the ...
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Eating non-kosher food without swallowing?

We find several places in which you would be liable for eating non-kosher food. Let’s say someone placed the non-kosher food in their mouth, began to chew, but did not swallow. Would they be liable ...
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Are Ricola drops pareve?

Are Ricola drops certified by Rabbi A. Yafe Schlesinger considered pareve?
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Why hasn't the coronavirus pandemic had a greater impact on kashrut supervision? [closed]

When the pandemic first began I expected dramatic repercussions to kashrut certification. Being a novice in this area I had understood that certifying organizations would need to be physically present ...
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Today's reason of wine prohibition

I can understand that in the old days non-Jewish people used to make wine for worshipping or that wine was the main alcoholic beverage and drinking a wine made by non-jews would require some ...
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Shellac Kosher, but Carmine for example isn’t how come?

Could someone explain to me on which basis/principle products like shellac are allowed to use (according to kashrut)? While products like Cochineal, Carmine, Carminic acid (E120) aren’t, because the ...
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Is a utensil used for chillul Shabbos considered non-kosher?

If a Jew cooks on Shabbos, the Shulchan Aruch OC (318:1) says המבשל בשבת [או שעשה א' משאר מלאכות] [טור] במזיד אסור לו לעולם ולאחרים מותר למ"ש מיד - One who cooks food on Shabbos [or performs any ...
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Is there any kosher considerations in regards to offal / tripe? [duplicate]

If you ignore our often modern sensibilities in regards to meat eating, for argument sake. Is there any kosher consideration in regards to the less desirable parts of animals. Is questions in regards ...
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Kashrus in nasal vaccinations [duplicate]

In the UK, the influenza vaccination contains pork. The nasal flu vaccine does contain hydrolysed gelatine derived from pork as one of its additives. Gelatine is commonly used in a range of ...

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