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

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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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Proper course for one realizing he is eating something forbidden [duplicate]

Suppose one was eating a piece of chicken, and he finds out it was from a non slaughtered chicken. Does Halacha require him to try to throw up?
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What defines “hard cheese” [duplicate]

I grew up with the minhag that after "hard cheese", one must wait for 15 minutes before one may eat meat. However, the question often arises as to what qualifies as such in terms of halacha and ...
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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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Can Jews eat hunted animals?

Are Jews allowed to eat hunted animals? That means the animals are dead before getting their necks cut. I do not think that a large proportions of ancient Jews were hunters, but I would be surprised ...
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Does an ivory spoon make hot tea non-kosher?

Both the handles of cutlery and entire spoons have been made of elephant ivory, which is from a tusk (a tooth) of an elephant. Elephant is of course not a kosher animal. Presumably, then, these spoons ...
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How was kosher cheese made before artificial rennet?

I understood that cheese is made by throwing in Stomach hide into milk and letting it congeal. How was kosher cheese made (where one's not allowed to mix milk and meat)? Now we use chemicals or ...
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Eating in a non-kosher household [duplicate]

I am a converted Jew (mother is not Jewish, father is) who has recently began keeping Kosher. My mother is an excellent cook, and I greatly enjoyed eating what she made growing up. I still would like ...
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How big can insects be before falling into kashrut halacha?

So we typically clean vegetable matter of bugs because, while it isn't an aveirah to eat a bug part if it's smaller than a(n) (halachic) olive, it is still prohibited to eat any non-kosher living ...
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59 views

What can you look for to ensure that a vegan restaurant is Kosher? [duplicate]

Vegan restaurants claim to serve strictly vegetable and plant-based meals. They would seem to be automatically Kosher, but I've read and heard that there could be other Kosher issues. What are ...
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358 views

Whatever happened to plumbas?

Not so many years ago, a plumba (apparently created by Rabbi Jacob Joseph) -- a metal tag attached to the wing of a kosher chicken indicating that it was, indeed, kosher -- on a kosher chicken was the ...
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Wait 6 hours after milk?

I once came across someone who was avoiding the meat at a lunchtime simcha. When I asked him why, he said it was because he had eaten "cereal with milk" at breakfast. When I expressed confusion, ...
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Can I use the Flavia coffee machine in my workplace?

There is a coffee machine (also makes tea and hot chocolate) in my workplace that uses individual packets (not pods) for the drinks. I do not know what the mechanism is for turning that into a drink ...
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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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Kosher status of medicine that comes in a gel capsule

What are the kashruth issues involved in the taking of gel-capsule medicine which does not have kosher certification?
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Are you allowed to take pills with gelatin [duplicate]

According to Halacha, are you allowed to take pills that are covered with gelatin? It's an antibiotic for acne.
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145 views

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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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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If the majority of organic and/or free range eggs contain blood spots, why are they certified kosher? [closed]

Variables that are known of the organic and/or free range: I don't believe the eggs with blood are just protein spots even though brown eggs through observation usually do contain more protein spots ...
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Homebrewer then converts; are there leniencies that allow him to drink the beer he made?

Suppose a gentile is a homebrewer who later converts to Judaism. Fermentation and aging can be long-running processes, so even if he knew to anticipate the problem and ceased homebrewing activities ...
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The Sciatic Nerve and Fat of Kosher Fowl

I have learned that the sciatic nerve must be removed from land animals to render the meat kosher. But what about fowl? Does the sciatic nerve need to be removed from chicken or turkey? Why or why ...
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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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The opinion that microwaves don't need to be kashered

So I remember hearing this opinion that followed like this: "Microwaves do not need to be kashered because the means of cooking in a microwave are different than those spoken about in the Gemara." ...
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What defines a “בהמה” (also “חיה”)?

As discussed in *Dag* (דָג) in kashrus halacha, *Tzomeach* (צוֹמֵחַ) in kashrus halacha, and *Of* (עוֹף) in kashrus halacha, there are different rules used to determine the kashrus status of ...
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*Of* (עוֹף) in kashrus halacha

To find the kashrus status of an organism, we first need to correctly classify it as plant, animal, of, or fish, as each group has its own distinct requirements. E.g., animals need to chew cud and ...
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Is it acceptable under kashrut to eat tyrannosauridae meat?

Theoretically speaking, if tyrannosaurs were still present these days, or in some way or another brought back, would they be kosher? Let's assume that they are properly slaughtered and prepared.
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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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Kashrus status of turkeys

From what I have heard there were those that did not eat turkey (such as Rabbi Yaakov Kamenetzky Zatzal) due to a question whether we have a Mesorah as to the Kashrus of this bird. I know that many ...
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Buying non-Kosher food for home Emergency Kits

The United States federal government, American Red Cross, and surely countless other governments and NGOs recommend that families have Emergency Survival Kits in their homes in case of a natural or ...
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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 ...
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587 views

To what grains do the laws of yoshon apply?

For which species must we wait until after pesach to eat the previous crop? Are there different cut-off dates for different species?
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Zimun and Bentsching (Bircat Hamazon / Grace After Meals) with Jews who ate non-kosher food

I came across an interesting situation recently. I was eating with Jewish, non-observant friends. I brought over a hamburger from a local kosher take-out place. They had homemade, non-kosher food, ...
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Does loose leaf tea need a hechsher?

Sometimes I find bags of dried tea leaves of various sorts in my local Turkish store. Do such teas need a hechsher (certification as kosher)? Is there any indicator I can use to tell if it's kosher or ...
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Are sea sponges kosher?

The sea sponge is scientifically classified as an animal, therefore maybe it would be considered unkosher, as seafood. On the other hand, it seems much more similar to a vegetable of some kind, so ...
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In what case can a wine made from the “Fruit of the Vine” be kosher but not acceptable for kiddush? [duplicate]

I saw a post the other day where a religious Jew posted a picture of a new wine he got and clarified that it was made from the "fruit of the vine" and yet it wasn't good for kiddush. What kind of ...
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What is the best way to keep updated with status of hechsheirim in Israel?

There are many halachic (and sociopolitical, agricultural, religious, economical, etc.) kashrut issues pertinent to Israel alone, leading to a great variety of challenges that kashrut authorities ...
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Is there a problem with “Mar'it ayin” by attending a company picnic?

Theoretical: Let's say that a company plans a picnic in a "semi-park" area. I.e. - it is a tree-lined public thoroughfare that many people including Jews, walk through. (I added this fact b/c I have ...
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Keeping Kosher Jewish/gentile marriage

A young couple is in love and intends to marry. She is Jewish and he is Christian. Each respects the other's religious beliefs and neither intends to convert. She keeps kosher. OTOH, he eats ...
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Difference between eiver min hachai for Jews and Noahides

Both Jews and Noahides are forbidden to eat aiver min hachai (a limb torn from a live animal). Is there any difference between the prohibitions for Jews and non-Jews?
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Keeping Kosher at a secular company

How you do deal with keeping Kosher while working at a secular company? It's easy enough to bring my own lunch everyday; what I'm not sure how to handle are events like company lunches and other ...
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Kashrus Advising agencies

There seems to be a lot of kashrut organizations that deal with their respective hashgachas. But rarely do they advise about other organizations or products that arent certified. Are there any ...
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Can you give an animal a tranquilizer, and proceed to slaughter it?

Can you shoot an animal with a tranquilizer, or feed a tranquilizer to an animal, and proceed to slaughter it in a kosher manner?
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Per Sepharadim, is Almond Breeze permissible immediately after meat?

Almond Breeze is described by its manufacturer (Blue Diamond) as being "dairy free [and] made on heated equipment also used for dairy products". The manufacturer also "uses stringent equipment ...
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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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415 views

Are homeopathic remedies kosher?

I'm not sure what they put in the remedies but I would like to know if they are kosher and would batel beshishim apply in this case if there was a non-kosher ingredient?
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1answer
95 views

Microwave oven and goy (me) cooking [duplicate]

Is cooking kosher food by a Goy - in this case me (doing giyur) in a microwave oven making the oven unsuitable for use by a Jew? I asked one rabbi who said there is no halakhic issue. I live in a ...
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Are We Not Supposed To Eat Fat?

In Leviticus 3-17 it states: All fat is the lord's. It is a law for you for all time throughout the ages, in all your settlements: you must not eat any fat or any blood. כָּל-חֵלֶב לַיהוָה ...
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Why does Hashem allow Noah et al to eat *all* animals?

Reading the parsha today, I noticed for the first time that Bereishit 9:3-4 seems remarkable (JPS translations): .כָּל-רֶמֶשׂ אֲשֶׁר הוּא-חַי, לָכֶם יִהְיֶה לְאָכְלָה: כְּיֶרֶק עֵשֶׂב, נָתַתִּי ...
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Chalak or Glatt?

Which standard is considered more machmir: chalak (Beit Yosef) or glatt? I have heard that when the Ashkenazim started emigrating in force to Israel, there was an issue of the Ashkenazim being meikel ...