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

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Is the blood of a non-Kosher animal forbidden because of וכל דם לא תאכלו

Inspired by a recent chat discussion related to this question. Does the prohibition of וכל דם לא תאכלו - not eating blood - apply to non-Kosher animals? The Rambam writes: ודבר מפורש בתורה שאינו ...
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Kosher flavored beer without certification on the bottle?

I've always heard that the rule in the United States is that domestic non-microbrewery/craft unflavored beer needs no certification as kosher, as all such beers are kosher, but that any other beer (...
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476 views

How does one keep a kosher sink?

How does one keep a sink kosher when using two separate sets of plates and dishes?
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What does the term “glatt kosher” mean, today?

A mashgiach explained to me that the term "glatt kosher" means that the lungs of cattle and sheep (the 2 main kosher animals sold in U.S.) are smooth and do not have air pockets. I hope that I have ...
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742 views

Does every thing need a hechsher?

Do objects used in food preparation and foods that have no or little chance of being not kosher really need a hechsher? Please cite sources, if you can.
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Kashrus Explained

A close friend of mine asked me to fire this question at the mi.yodeya community so here goes: "I came across this rather interesting rendition of "kashrus Explained", not sure who authored it, but I ...
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150 views

Can vegetables/fruit be uncheckable?

There are differences in 'bug checking strategies' for different countries due to differences in bugs, pesticides, harvesting and packaging techniques (etc.). In Israel, I have recently encountered ...
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312 views

Why don't we use the same utensils for milk and meat if the food is cold

If I have designated utensils for cold foods such as salad, or cold salami and cheese. What is the problem of using the same utensils for both milk and meat, since there is no bliya because both are ...
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What is the justification for not requiring “chalav Yisrael” cooking equipment for those who don't hold by R' Moshe's leniency?

As Shalom explained in his answer to a question about chalav Yisrael milk, R' Moshe Feinstein ruled that in countries where the local government regulations are sufficient to ensure that cow's milk is ...
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4answers
652 views

Does a Food Mashgiach have to Sacrifice his Life?

Suppose a Mashgiach of a food establishment is threatened to "keep quiet" about some of the questionable behaviors [for purposes of the question, consider both actual non-kosher, and possibly non-...
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Hagalah in Denver?

In high-altitude cities, water boils at a lower temperature than the standard 212 degrees Farenheit. For example, in Denver the boiling point is about 203 degrees. Can one kasher utensils with hagalah ...
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Why aren't Yemenites an ed echad on locusts?

I've heard that the reason we (most of us) don't eat the locusts enumerated as kosher in the Torah is that we cannot identify them. That is, we don't know what type of locust is referred to by the ...
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223 views

Milk-free cheese: Is it kosher? Parve?

So according to this article, scientists have created cheese by inserting DNA blueprints into a yeast. Essentially, the milk proteins are being created outside of any animal, through genetic ...
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565 views

What makes a wine kosher?

Why are some wines kosher and some not?
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991 views

Gentile owned and operated Kosher establishment

Are there any restrictions or limitations for a gentile owning and operating a kosher establishment? Are there any limitations or restrictions for Jews patronizing such an establishment?
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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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Why do Fish not need Shechita?

In order to eat "regular" Kosher animals, there is a requirement for the animal to undergo Shechita (ritual slaughter). If an animal were to be killed / die without Shechita it is forbidden to be ...
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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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496 views

Veal and Kashrus

Is there any kashrus issue with veal? What about with white veal?
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Would a space fish be kosher?

In the episode "TKO" of the science-fiction show Babylon 5, Lt. Commander Susan Ivanova, a Jew, has dinner with her rabbi and they have a discussion about the food that they are eating. Rabbi ...
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1answer
324 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 ...
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174 views

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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1k views

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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Timtum Halev not b'derech achila

Does the notion of Timtum Halev -- dulling of the heart (spirutal damage) which Rabbeniu Bachaye explains in Vayikra 11:43 -- apply when the non kosher food was put in one's body without doing it b'...
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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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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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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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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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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 electronic cigarette juice require a hechsher?

Does electronic cigarette "juice" need to be kosher (require a hechsher)? Does it matter what flavor the juice is?
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639 views

Kashrut of Kellog's cereal

The cRc recommends Kellogg's cereals with only a k on the box. In my experience, I have not heard of anybody who disagrees with this. This is an unusual situation, though, since normally a plain k ...
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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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263 views

Hagala for a new pot

I know that there is a halakhic necessity to tovel a new pot. However, has anyone ever heard of the halakhic necessity to do hagala on a new pot? Reason for asking was this.
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893 views

Working in a non kosher yogurt store

I was asked a question this afternoon and I don't know a good answer (yet) so I'm posting it. I have been asked in the past whether a Jewish person may work in a non-Kosher restaurant that serves ...
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681 views

Is human flesh a kosher food?

Is human flesh a kosher food? Please provide both modern and classical sources.
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547 views

What's the Bishul Akum heter for hard-boiled eggs?

I've seen prepackaged hard-boiled eggs in the grocery store with an OU. As eggs are relatively inedible raw, what is the heter vis-a-vis bishul akum for them? (Or are they having a Jewish mashgiach ...
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1answer
2k views

Can a Jew buy non-kosher food for a gentile?

If a Jew is entertaining non-Jews in a business setting is he allowed to buy them non-kosher food in a non-kosher restaurant?
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Can I use a Keurig coffee machine if someone else has used a non-kosher “pod”?

My office has a Keurig machine. They work by inserting small plastic cups, called "pods", that contain coffee or other items. As I understand the machine's mechanism, hot water drips through the pod ...
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Is it kosher to eat live fish

In some countries people like to eat animals that are still alive (e.g. dancing squid / octopus). Clearly these animals are not kosher, but it is also possible to eat kosher-types fish that are either ...
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Source for hechsherim [duplicate]

Who was the first rabbi or beis din to establish a kashrus organization? I know according to the gemorah, chazaka is enough if the owner is yiras shamayim. Was there ever a takonah established ...
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If you check for bugs according to halachic requirements, and then there is a bug in the food, are you liable?

If one or one's wife does everything that is needed for checking, but one accidentally eats a bug anyway, is one liable for the sin(s)? I'd also be interested in knowing whether one would be liable ...
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278 views

What is the point of a hechsher on Cholov Stam?

I assume that the widespread custom of eating/drinking Cholov Stam products (products using milk in which the milking was not observed by a Jew) is relying on the leniency of R' Moshe Feinstein that ...
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2answers
160 views

Are mouse-deer kosher?

Mouse-deer do chew cud (they has four stomachs), but have not two, but four hoofed toes. Are they kosher?
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1answer
833 views

Why does medical marijuana need a kosher supervision?

Today, NY State joined several others in opening clinics to dispense medical marijuana. Distribution of this is restricted to patients who have severe illnesses such as Parkinson's Disease, epilepsy, ...
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344 views

Is the Halachic concept of taste transfer accepted by scientists and chefs?

Halacha (Jewish Law) tells us that when food is cooked in a pot, that pot absorbs the taste of that food (to what degree is impossible to know). When that pot is then used to cook something else, the ...
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2answers
906 views

Brands of KFP peanut butter in the US

Does anyone know which brands of peanut butter are Kosher for Passover in the US? Alternatively, I have heard that there is a list for Sepharadim of KFP products that contain Kitniyoth. Can someone ...
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Any information about Rabbi Barnett Hasden's “Ner Tamid K” hechsher?

Does anyone here know anything about the reliability of "Rabbi Barnett Hasden of Ner Tamid K in Staten Island, NY"?
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If a restaurant is already halal, how much more work is it for them to become kosher?

There is a middle-eastern restaurant1 (independent, not chain) near my workplace that my coworkers think highly of. Today I learned that it is halal (some info about what that means), which got me ...
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Can a Jewish, non-observant parent cook for his Orthodox child? [duplicate]

Can a Jew who understands the laws of Kashrut but is not personally observant cook for a Kosher-observant Jew? For example, can a Jewish but non-observant parent cook for his Orthodox child?
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*Tzomeach* (צוֹמֵחַ) in kashrus halacha

To find the kashrus status of an organism, we first need to correctly classify it as tzomeach, animal, bird, or fish, as each group has its own distinct requirements. E.g., animals need to chew cud ...