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

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Does Neveilah/Tereifah make you Fleishig?

Another question asks whether meat of a non-kosher species (Behemah Temeiah or Hayah Temeiah) makes one Fleishig (considered to have eaten meat, so cannot eat milk). My question then is about kosher ...
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Is the lemon slice added to a soda in many bars a problem kosher-wise?

Many bars (and hotel lobbies) will add a lemon wedge to the top of a glass of soda; often it's used to differentiate between Diet Coke (gets the lemon) and regular Coke (no lemon). Does this pose a ...
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2answers
981 views

What's the halachic advantage of double (or triple) wrapping food?

I've heard of both double and triple wrapping when it comes to shielding a food item in an oven with regards to Kashrus. What exactly does double or triple wrapping accomplish that one wrapping ...
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2answers
443 views

Halachic Considerations for Women in the IDF

For a religious girl going into the IDF very soon, there are a few questions that are often asked: Especially in active units, wearing a skirt while on base can be a problem: While crawling, ...
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155 views

Allowed to help prepare / serve “milk and meat” meal in homeless shelter?

Imagine a case in which one is invited to volunteer with a group that is preparing and serving a meal at a homeless shelter. The group has decided on a menu that includes milk and meat together in ...
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1answer
110 views

What is “reverse certification”

I got this in a daily halacha email but not sure what Reverse Certification means, I figure someone here does Reverse Certification It is permitted for a mashgiach to enter a non-kosher ...
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307 views

Kosherizing Water using Distillation

Suppose I have water that was cooked with non-kosher food. I then take the water and distill it. Would this water be considered permissible to drink?
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278 views

Finding Meat After 6 Hours

Suppose you wait 6 hours (or more) and then realize you have a small piece of meat stuck in your teeth: Do you have to remove it before eating dairy? [assuming you have to remove it] Do you have to ...
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756 views

Kosher symbols on non-food items

I just bought a box of 100 sandwich bags and on the box there is an (U) symbol. This is neither unique nor uncommon. Why do marks of hechsher appear on non-food products? Is there anyone in the world ...
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184 views

Must I check the kashrut certificate every time I visit a bakery or restaurant?

Say I visit a bakery, restaurant, jail, hospital, or nursing home. And say I already know that the food there is kosher. Must I still check the kashrut certificate every time I visit? (Gershon ...
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2answers
656 views

Is Coca Cola (and other beverages) kosher everywhere in the world?

I'm currently sitting in an airport transit lounge in Istanbul, and thinking I wouldn't half mind a drink. Available to me are the usual range: Coke, Fanta, Sprite, filter coffee... Are these ...
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2answers
791 views

A site to search Kosher Symbols by characteristics?

Several years ago, I found a website that let me search and sort Kosher symbols by look and other characteristics. It seemed like each symbol was tagged with its distinctive features. This was very ...
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1answer
600 views

Koshering granite

I have been told that a granite counter top is similar to glass in that it is not porous and does not absorb taste from food that touches it. Is there a source in halacha for this concept? What other ...
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644 views

In what way is kosher chicken different from brined chicken?

Over on Seasoned Advice, there have been a number of questions related to the nature of kosher meat and the amount of salt absorbed by the meat. Most recently, In what way is kosher chicken different ...
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1answer
207 views

Are plants that exhibit rapid plant movement considered non-Kosher animals?

There is a question here asking if sea sponges are Kosher. The answers seem to center around the idea that regardless of if they have animal cells, a halachic classification might depend on how it ...
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5answers
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Is Extra virgin olive oil kosher by default?

I was given extra virgin olive oil as a gift from Italy (picture below), and I wanted to see if that type of olive oil is treated like fruits and vegetables, or does it needs to have certification on ...
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3answers
315 views

Does kosher mean healthy?

What is the relation between kosher and healthiness? G-d wants us to eat properly but also to be healthy. For example, it is better to try not to eat too much meat (even if it's kosher), and more ...
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4answers
1k views

Who determines the kosher status of “new” foods?

Who determines the kosher status for "new" processed foods (e.g. Jell-O)? A few orthodox rabbis' approval? General consensus by the Jewish religious community? Certain kosher standards organizations? ...
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1answer
430 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
358 views

Veal and Kashrus

Is there any kashrus issue with veal? What about with white veal?
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636 views

Does a pot that cooked food with a bug in it need to be kashered afterward?

If one were cooking a pot of pasta or a soup and later found a bug or many bugs in the pasta or soup, would the pot need to be re-kashered after it was thoroughly cleaned?
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1answer
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Is Guinness Beer no longer kosher?

A new Smithsonian article has discovered Guinness Beer's use of isinglass, a technique that Guinness Beer has confirmed that it does to the Huffington Post, and even declared "Guinness Black Lager is ...
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1answer
189 views

Am I still Fleishig? When did we eat?

I'm sure this happens many times in a Jewish home on Shabbos: It's Shalosh Seudos time and there's dairy to eat, except no one remembers exactly what time the Shabbos meal took place. So, my question ...
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1answer
126 views

Animals vs. plants: kashrus

Why did God make all plants, but only some animals, kosher? Sources, please.
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170 views

Can one trust the Kashrut of Alcoholic Beverages in bars?

Kosher Organizations, like the CRC (Chicago Rabbinical Council, supply lists of alcohol recommended for purchase and consumption. May one purchase these alcoholic beverages from a bar (where the ...
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8answers
492 views

Kosher accommodations in out-of-the-way US places

Are there any non-urban vacation areas in the United States with full-service kosher food available? I realize that the following are not hard to find: Kosher restaurants in some urban centers. A ...
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4answers
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Is Halal Meat Kosher?

Muslims slaughter a Cow by saying "Bismillah, Allahu Akbar" meaning : "In the name of Allah , Allah is Great"" and follow the Zabiha (shechita) procedure to make it Halal. Some salient point of the ...
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472 views

Which Kosher Certifications are trusted by all?

There are many hechsheirim in today's world, but unfortunately, not everyone considers all of them to be on par with their standards. Nonetheless, I am assuming (and you may correct me if I'm wrong) ...
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2answers
924 views

If the label says O-U D, but the warning label for allery sufferers says “no dairy”, do we consider the product dairy or not?

I attended a fantastic lecture on kashrus and dairy products by Rabbi Zushe Yosef Blech, shlita, who was asked an interesting question: Can you eat Oreo cookies after a fleishig meal? It was pointed ...
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4answers
274 views

What is the practical difference between nebelah and terefah?

The second mishna on Chullin 32a explains that if an animal is rendered invalid by any death which does not occur through proper ritual slaughter it is nebelah while if it is rendered invalid for some ...
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4answers
379 views

If a product with a Hechsher doesn't say dairy does that mean it's pareve?

I'm not sure when this practice started, but I noticed that many/most/all Kosher Certifications indicate whether a product is dairy or not. Does a lack of such a marking indicate that the product is ...
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2answers
397 views

How can people drink 7-11 Slurpees and soda?

There is no real Hechser on 7-11 Slurpees. How do people drink them? Is going on the Star-K's list okay? What about soda from the machine? I found that 7-11 switches the spouts sometimes. So even if ...
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3answers
457 views

Is human blood treif?

OK, I know it isn't kosher, but what is the shiur? And do we hold "chetzi shiur assur min haTorah"? For an application, what if you get a cut while hiking in the woods; is it assur to clean the wound ...
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Kashrut in the Talmud

I've been speaking with someone about Judaism - what, how, why, etc. We came to the issue of kashrut, and she had a hard time understanding how we got these random laws from the Torah. I explained ...
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In what countries is chalav yisrael not required for milk?

The Talmud says milk is not kosher unless a Jew supervises the milking, to be sure it's just kosher-animal milk. Assuming one goes by the ruling of R' Moshe Feinstein and others that "knowing" is ...
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371 views

Would synthesized meat be Kosher?

Scientists are preparing synthesized meat for human consumption. See here for a excerpt, and two articles here and here. My question is: Would this meat be considered Kosher? Might it depend on the ...
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2answers
289 views

Issues with cooking meat and milk at the same time

What issues are there (either potential or inherent) in cooking meat dishes and milk dishes at the same time on the same stovetop (not in the same pot)? Please also compare benefits and problems ...
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1answer
873 views

Is Vegemite kosher?

Is Vegemite kosher? What hechsher?
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1answer
623 views

Does bagged lettuce need a hechsher?

Does one need a hechsher on commercially available bagged lettuce? Or is the standard washing process used by the producers sufficient to remove all insects of halachic significance? Anecdotally, ...
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Why do some people have a custom to boil only odd numbers of eggs?

I heard that some still have a custom to boil only odd numbers of eggs at a time. I heard that the reason is if there is a blood-spot in an egg, the egg will be Battel Berov. This only explains why ...
8
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1answer
169 views

Is a Jewish farmer allowed to raise animals for non-kosher slaughter?

Is a Jewish farmer allowed to raise animals for non-kosher slaughter? Does it make a difference whether it is a non-kosher animal (e.g. pig), vs. a kosher animal? Does it make a difference whether the ...
8
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1answer
316 views

Bitul BeRov - the classic case in real life

In Halachah there's a tremendously powerful concept of Bitul BeRov (nullification among the majority). It goes like this: If you have three identical pieces of meat, and you know for a fact that one ...
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Participating in a non-Kosher food co-op

A food cooperative is a member-owned food store. It is typically set up that in order to shop there at discount prices, each person can become a member if they agree to volunteer a certain amount of ...
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399 views

why create non kosher animals?

why did hashem create non kosher animals, was it to tempt us and see if we would control ourselves?
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1k views

Which rabbis permit food being kosher just based on the ingredients?

Kosherstarbucks.com give options of what to order based on different halakhic standards. They include the "No Utensils List" (CRC-recommended), the Regular list, and the Kosher by Ingredients list ...
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4answers
820 views

Is being vegan “kosher”?

Is being a vegan completely following halacha? Even if not eating anything traif (non-kosher), perhaps it's not truly kosher because you are not following the commandments to domesticate animals and ...
7
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4answers
268 views

asking to see a kashrus certificate

A restaurant has a sign on its window, or a notation in an advertisement, indicating that it's under the kashrus certification of Rabbi So-and-so or Agency Such-and-such. The first time someone walks ...
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146 views

What is flavored beer vis-a-vis kashrus?

As referenced in Shalom's answer here, the cRc alcohol list here, and many other places, non-flavored, domestic beer can be assumed legally drinkable according to halacha. What constitutes flavoring ...
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955 views

How to keep kosher in a non-observant household

Many Baalei Teshuvah (returnees to Judaism) confront various conflicts regarding their interactions with non-observant family and friends. A big one, which has not been discussed here (AFAIK), is ...
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624 views

Can I trust a non-kosher home's coffee pot?

I thought I heard that its ok to use a coffee pot in a non-kosher home, but I could be mistaken. Does anyone know?