Questions tagged [kashrut-kosher]

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

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1answer
306 views

Alcohol sales despite government monopoly

Many places have government imposed alcohol monopolies and private retailers of alcoholic beverages are forbidden. As alcohol, especially (red) wine, has a central place in Jewish practice and as ...
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The Secret of Nature Valley

What, if any, might be legitimate halachik concerns with uncertified Nature Valley granola bars? Their "Crunchy" line of products seems to be certified as OU pareve(?) However, many of their other ...
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Why does steam impart dairy or meat status onto a cover?

Steam is a separate category as aroma in hilchot Kashrus. The former, if hot, contacts a pot cover, that cover would take on the dairy or meat status of the food below it. However, when water is ...
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Instant Pot Kosher Rules

I've been considering getting my Orthodox Jewish friend who's learning to cook an Instant Pot as a surprise gift, but I'm not myself Jewish, so I'm a little lost here. If I want my friend to be able ...
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2answers
243 views

Non Jews and human flesh

There is a prohibition against a Jew eating human flesh. There is a dispute if it is a biblical or rabbinic prohibition (see here, here and here). Either way, I'm wondering if a non jew has the same ...
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4answers
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According to Ibn Ezra should we not follow all the commandments?

In a question I asked (“Health benefits for eating kosher”), I wrote that ibn Ezra said that all the mitzvot have to have a rational explanation for them and if a single commandment went against ...
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May someone eat snow from a typical city street or drink water from a street puddle?

A follow up to the comment on my answer to this question said, "Don't eat yellow snow." While, I wouldn't recommend someone do this for health concerns, my question is halachically can someone eat ...
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Saying bracha on dairy product before 6 hours have run? [duplicate]

Is there an accepted practice on what you are supposed to do if you thought 6 hours had run and say a bracha on a glass of milk but then you realize right before drinking it that it has not been 6 ...
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Why is manna kosher?

We seem to not know what manna is, yet how do we determine it is kosher? I suppose this is the case because G-d deemed it so, but what do our sources say?
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Checking strawberries with a magnifying glass

Most resources mention some type of process of rinsing with detergent etc. Can I just use a magnifying glass in order to see a potential bug? Also, why do the resources say to use soap or detergent.....
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Health benefits for eating kosher [duplicate]

What are some health benefits for a kosher diet? The Rambam and ibn Ezra said that all the mitzvahs has to have a rational explanation for them. Ibn Ezra said that if a single commandment went against ...
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1answer
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Does double wrapping food work for non-kosher food?

I have read several articles stating that one may double wrap food and place it into a non-kosher oven. I haven't read anything regarding the "opposite situation". Lets say one has verified that an ...
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Is a signature on a stapled bag with the restaurant’s bill considered enough of a seal for meat? [closed]

If one were to order delivery and the bag were stapled with the restaurant’s official receipt stapled to the bag and there was also a signature (albeit somewhat illegible) along the opening of the bag,...
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In light of modern science, why is bee honey still kosher?

My understanding of why bee honey is kosher is because the talmud says that the honey is not a by-product of the bees. They simply store the nectar in their body to transfer it and then expel it, ...
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Why is Bee Honey Kosher? [duplicate]

Honey is formed when a bee mixes enzymes in its own body with nectar from flowers to form honey. Since honey is thus a byproduct of a non-kosher animal, how could it be Kosher while for example, camel ...
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Explanation of מיגו דהאי לאו דאיסורא הוא דהאי נמי לאו איסורא הוא

The Shulchan Aruch in Y.D. 110:7 writes (based on Zevachim 74a and 77b, as explained by Rashi): דָּבָר שֶׁאֵינוֹ בָּטֵל מֵחֲמַת חֲשִׁיבוּתוֹ, כְּגוֹן בַּעֲלֵי חַיִּים וּבְרִיָּה, וַחֲתִיכָה ...
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What is the basis for eating in someone's house without a kashrut certificate?

No one asks for a kashrut certificate to eat in someone's house; they just make a rough judgement based on the host's reputation (the way they dress or behave, the circles they move in, etc.). That ...
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1answer
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Rav Moshe Feinstein and chodosh in the Diaspora

I'm searching for some clarification regarding what Rav Moshe Feinstein, z"l, held with regard to chodosh in chutz la'aretz. My father-in-law recently attended a lecture of a student of Rav Reuven ...
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1answer
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Are Uncertified Lotus Biscoff Cookies Kosher

According to the company website: Lotus Biscoff Products are not Kosher certified. From Kosher.com: Note: Biscoff brand products, including Lotus Cookies, that are made in Belgium and are ...
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2answers
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Who certifies the hechsher magen David with a K replacing the right side?

This symbol appears on Trader Joe's Organic Tahini. I have searched in a lot places, but cannot find it. The product is made in Greece. Anyone know who gives this hechsher and if it is reliable?
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Poskim who hold chalita is necessary?

Are there any famous rishonim or achronim (outside of Yemen & besides the Rambam) who hold doing chalita to meat is necessary?
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Are sea sponges kosher?

The sea sponge is scientifically classified as an animal (kingdom Animalia), therefore maybe it would be considered unkosher, as seafood. On the other hand, its phylum Porifera is distinct and ...
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1answer
154 views

Gifting a kosher product one wouldn't eat or drink

Can a Jew give his Jewish friend a product which is kosher m'ikar hadin if the person giving it would not eat or drink it himself? The product could be e.g., kosher meat which is not glatt, scotch ...
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771 views

How can you get hot kosher food on campus?

So you're living in a college/university town with no kosher restaurants. How can you get hot kosher food?
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Can one eat together two salads with onions (charif) cut with different knives?

Two salads have been prepared and both have raw onions. One salad was prepared with meaty utensils and the other prepared with dairy utensils. The onions were chopped with their respective knives. All ...
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6answers
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Is being vegan “kosher”?

Is being a vegan completely okay according to halacha? Even if a vegan is not eating anything traif (non-kosher), perhaps it's not truly correct because you are not following the commandments to ...
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1answer
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Is a hashgacha required for freshly squeezed orange juice?

Does freshly squeezed orange juice require a hashgacha? (ex: the freshly squeezed orange juice at Whole Foods)
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1answer
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Under what conditions is baking powder kosher [closed]

I'm a Jew from Iran. I want to know if baking powder is kosher without any certificate since they don't exist in Iran. Generally baking powder include TARTARIC ACID.
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Is swordfish Kosher?

What's the deal with swordfish? Is it Kosher? Which sources say yes, and which sources say no? EDIT: I know that R' Dr. Moshe D. Tendler is well known for having consulted with scientists (in 1951) ...
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2answers
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In modern Judaism, do they still make Menorah Stamps for the purpose of Marking Kosher Bread?

I just found this article, and I thought it was cool: https://www.livescience.com/17821-kosher-bread-stamp-discovered.html. The link says that during the Byzantine Era in Horbat Uza, Jewish bakers of ...
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Why is there a prohibition of gevinat aku"m?

I vaguely recall that Talmud Avodah Zarah mentions a prohibition of eating gevinat akum - cheese manufactured by an idol worshipper (as I understand this definition.) If there already was a ...
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Unsupervised milk - there was a treife animal in the herd

I heard in a recent shiur that Dayan Weiss zatzal paskened that an animal that delivered its young via caesarean section is considered a treife. Therefore its milk cannot be drunk. When supervising ...
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Case Study: Kashrut of Tapioca Starch

I have heard different answers from representatives of the cRc and the Star-K regarding the kashrut of un-certified tapioca starch. While both agree that it requires a hechsher for Pessach, the Star-K ...
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Hard Boiled Eggs: does meat or dairy flavor penetrate shell? [duplicate]

I tried searching this but got a lot of results about cooking three eggs in one pot checking for blood spots at cetera. Suppose that you hard boil some eggs in a pot that is normally used to cook ...
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1answer
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Does the prohibition of Gid Hanashe apply to human flesh?

Regardless of how one holds re: "Is human flesh a kosher food?" (ie if Yes= legitimate question, if No= additional issur)- Would the prohibition of Gid Hanashe apply to human flesh?
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1answer
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During Temple times, who can butcher a kosher animal?

During the Temple Times, for the purpose of consumption, can any Jew butcher a kosher animal or must the animal be butchered by a Cohen or a Levi? I would appreciate a rabbinical source. I just ...
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When can kashrut certification be withheld?

In today's news (11 Dec 2018): "Rabbis from the Vaad HaRabanim of Flatbush, which grants kosher certification, threatened to pull their supervision of the Garden of Eat In and Orchidea if [a certain]...
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Were the Israelites' pots really ben yoman when they received the Torah?

In the Mishnah Brurah's explanation for the custom of eating dairy foods on Shavuot (Orach Chaim 494:12), he mentions that the Israelites' pots had been used for non-kosher food within the past 24 ...
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Matcha Tea Inquiry

Does ground matcha need a hechsher? I know certain items, such as tea, when they are only one ingredient do not require a hechsher. Is ground matcha included in this?
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Can a genetically modified pig be kosher, if gestated in a kosher animal? [duplicate]

This answer says that a pig that was genetically modified to chew it's cud would not be kosher if gestated in a pig. For clarification, would it be kosher if it was gestated in a cow or other kosher ...
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What is today's Jewish explanation for why rabbit meat is unkosher?

In yesterday's parasha, we read not to eat rabbit meat because it chews its cud (Vayikra 11:6): "ואת הארנבת כי מעלת גרה " Today, we know this is not true. I am curious as to how religious Jews ...
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1answer
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Why are castrated animals slaughtered as Kosher beef?

Castration and dehorning of cattle is the common practice in the cattle industry. This a violation a basic Noahide Law ref Tractate Sanhedrin 56a-b: שבע מצות נצטוו בני נח ...רבי חידקא אומר אף על ...
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Why does Torah consider Bats as birds?

It seems from Parashat Re'eh (Deut 14:18): וְהַחֲסִידָה וְהָאֲנָפָה לְמִינָהּ וְהַדּוּכִיפַת וְהָעֲטַלֵּף׃ the stork, any variety of heron, the hoopoe, and the bat. that Torah considers BATS ...
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1answer
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Does anybody recognize this kashrus symbol? Rectangle K US

As the title says, does anybody know this kosher symbol? It looks like a large K with the letters U and S on top and bottom of it, inside of a rectangle. The product brand is Super Cakes, subsidiary ...
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KORC - Kosher Symbol

I was in Costco today and saw chopped romaine lettuce with the KORC symbol. I was wondering if anyone knows if this symbol is accepted by the OU or other large Kashrus organizations.
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Is vaping prohibited?

With the rising popularity of vaping and electronic cigarettes, many might consider turning to them to stop smoking or to at least divert their habit to a healthier alternative. However, the liquids ...
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1answer
107 views

Milk & Meat Tradition

At what point in Jewish history did waiting 6 hours between milk and meat become the uniform approach in most communities (or in some places 1 hour or 3 hours)? Prior to communities adopting uniform ...
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4answers
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Is Cup-K reliable?

I've recently seen a hashgacha around NYC called Cup-K or CupK. However, I have been able to find precious little about it and what I have found seems mostly to consist of unsubstiatable rumours. Does ...
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1answer
628 views

Looking for hechshered plain kefir Kosher for Passover

Does anyone know of hechshered plain kefir gluten free no additives Kosher for Passover? Kefir is a fermented milk product (cow, goat or sheep milk) that tastes like a drinkable yogurt. Kefir ...
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Reverse Osmosis Water machine — possible kosher issues?

There’s a machine at a local store near me that has a reverse osmosis water machine. I don't think there is a hecsher on the machine, but it's just water. Is there any possible kosher issues with it, ...