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

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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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If the label says OU-D, but the warning label for allergy 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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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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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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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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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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Can a mother taste her own breastmilk?

Can a mother drink/taste her own breastmilk? I know theres an issur for a non-baby to drink directly from the breast; but, what about from a cup? Further, if it is indeed assur (even from a cup), ...
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Mehadrin vs. Non Mehadrin

What's the difference between mehadrin and non-mehadrin certifications. (e.g. at http://www.kosherinjerusalem.com/where_to_eat/kosher-hotels)
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Is kopi luwac (civet excreted coffee beans) kosher?

Kopi luwak , or civet coffee, refers to the seeds of coffee berries once they have been eaten and egested by the Asian palm civet http://en.wikipedia.org/wiki/Kopi_Luwak Is it kosher because they ...
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plastic utensil absorption and kashering

Does a plastic utensil swallow up taste and excrete it out like metal,or is it like glass. Also can plastic be kashered if it became treif? What are the sources that discuss this?
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Do you have to check boiled eggs?

Is it necessary to check hard or soft boiled eggs for blood spots? I've never seen anyone do it, so perhaps it is not, but if so, why?
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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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Pharmaceuticals and Kashrut

To what degree does medicine need to be kosher (not regarding pesach)? Most medicines are a random series of active ingredients with little meaning to the non medical professional - but what about "...
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Can rags and oven mits become non-kosher or be kashered?

If kitchen rags or cloth oven mits have been used in a non-kosher kitchen, may they be used in a kosher kitchen after they are laundered? Or do they become non-kosher (for example, from contact with a ...
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Does Vegan Certification Have Any Halachic Weight?

There are a number of organizations that offer Vegan Certification for food products; the concept is the same as kosher certification, (though that is the only similarity). Examples would be Vegan.org ...
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Is there such a thing as kosher perry?

This might be too obscure for most people, but I want to put it out there anyway. Perry is fermented pears (sort of a pear cider, if you will - from what I read in Wikipedia, perry produced outside ...
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*Asher Bamayim* (אשר במים) in kashrus halacha

To find the kashrus status of an organism, we first need to correctly classify it as plant, animal, bird, or asher bamayim*, as each group has its own distinct requirements. E.g., animals need to chew ...
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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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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, I'...
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Eating in less-religious homes

May one eat a meal in the home of one who attended yeshiva and who one considers trustworthy vis-a-vis making sure everything is kosher for their guests, however, one is reasonably certain they do not ...
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Is human placenta kosher?

There is, apparently, something called placenta encapsulation which means making pills out of a placenta postpartum for the purpose of digesting placenta. People claim that these pills offer unique ...
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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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The stolen maple syrup and kashrus

Does anyone know if there is going to be a kashrus problem with maple syrup next year? A rather large amount of maple syrup was stolen last year. The thieves did not keep it in the original casks, ...
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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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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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Eating Giraffe Meat

Why is it common practice not to eat Giraffe Meat?
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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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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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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?
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Can an immersion heater be used to kasher a sink? Does anyone have experience with this?

Normally, to "kasher" or "kosherize" a metal sink (from non-kosher to kosher, or before Passover), you clean it out well, make sure it's used for nothing hot for 24 hours, then pour boiling water all ...
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Who certified this yogurt as kosher?

Looking at unclear heshers on some yogurt packages: Dannon "Light and Fit" yogurt has a capital K without any other identifier. Yoplait "Light" has a capital K D. I was told that the letter K alone ...
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How to increase the demand for kosher food?

I live in the Hartford Connecticut area and while the population of people who practice the Jewish faith is increasing, the ability to find Kosher food is on the decline. Even the local Kosher grocery ...
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Is it OK to eat non-certified-as-kosher sushi?

I've heard the argument that since everything in sushi is raw (assuming there are no non-kosher ingredients), and that since the rice is cooked in a rice cooker that is used only for rice, it's OK to ...
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Is Red Bull™ kosher?

Is the Red Bull™ energy drink kosher?
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What Kashrut Agency Uses this Symbol?

I found this symbol on a box of chocolates today: It was on a box of chocolates from this company - http://www.hauserchocolates.com. Anybody recognize the agency?
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Who or what is OV? (kosher symbol)

In the store earlier, I saw a kosher symbol I had never seen before, and was wondering if anyone here knows what organization it represents. Here is the symbol:
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What makes something “worthy of being honored”?

When a piece of meat is in a mixture that should nullify it, we don't consider it nullified if it is ראוי להתכבד, or "worthy of being honored", something you would serve to a guest. Is there some kind ...
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Are there any hechshers that certify food as kosher for B'nei Noach?

Are there any hechshers that certify food as kosher for B'nei Noach? Or any restaurants that offer such food? If not, how do observant B'nei Noach ensure that the meat that they eat was definitely not ...
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At a non-kosher restaurant, is sliced raw fish kosher?

At a non-kosher restaurant, is thinly-sliced raw fish kosher? Let's assume one sees the preparer clean the knife and cut from the whole fish. Also, let's assume this raw fish is sashimi — ...
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Is watching via webcam valid for cholov yisroel?

Would milk be considered cholov yisroel if someone was watching via webcam?
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A restroom in a formerly-kosher eatery vs. one in a never-kosher eatery: which is preferable?

Say I'm on the road traveling, and I need to use a restroom. Which of the following two restrooms is preferable? One in a restaurant that used to be kosher, but is now non-kosher. One in a ...
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Does flavored dental floss need a hechsher?

You can find flavored dental floss these days usually in the flavor of mint. Is there anything to worry about or is it no worse than mint mouthwash? If not, doesn't the gemarah in berachot 6th perek ...
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Is there any reason (based on the laws of kashrut) that one cannot brine kashered meat?

On Seasoned Advice, there is a question regarding brining kosher birds. Is there any halachic reason that one cannot brine meat that has already been kashered?
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Does kashrut depend on peah, leket, etc?

I understand that if a crop in the Land of Israel does not have the trumot and maaserot properly separated, then the produce is tevel and cannot be eaten (until it is done). But that made me think of ...
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How do you look into a Pesach program?

I often hear that Passover programs are fraught with potential issues, primarily in the area of kashrus, but also with the reliability of the Rabbanim there and other issues. How can one go about ...
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Shechting non-Kosher animals

The question was asked: If someone for example is sick and must eat from a non-kosher animal. Must it be shechted (slaughtered) first like a kosher animal? I don't see any reason why it should, since ...
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Is one allowed to eat foods that were grown from non-kosher materials?

There is a known story of how one time a person brought a giant carrot on Erev Pesach to the Belzer Rebbe (back in Europe) for Karpas. After the donor left, he said "burn it with the Chometz". As the ...
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Do besamim (spices) for Havdalah need to be kosher?

Suppose there is a pack of mixed spices that does not have a reliable hechsher, but looks like it would be good for besamim. Would it be OK to use them for havdalah since you have no intention of ...
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chicken kashrus

When buying chicken from your local kosher butcher, what signs should one look for that would indicate there may be a question about the chicken's kashrus? Does it matter whether one bought a whole ...
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Refrigerators and shabbat

I have a friend that became Habad a while ago, and lives with her non-orthodox parents. She leaves the house for shabbat, but insists that her parents turn the lights off in the fridge, because if ...