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

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Does breast milk make vessels non-kosher or milchig? [duplicate]

I understand that breast milk is kosher only for babies and is traif for adults. But does breast milk make other vessels non-kosher? For example, if I put a spoon, knife or fork in the breast milk, or ...
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Test tube meat: Pareve? [duplicate]

Meat that is grown in a test tube - also known as in vitro meat - would seemingly fall outside of existing kashrut categories. You do not need to kill an animal (thus no need to schecht). Would it ...
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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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54 views

Whale-yeast Beer

This article describes a beer created with yeast from fossilised remains of an ancient whale. From what I understand, the yeast imparts certain characteristics to the beer other than alcohol content. ...
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816 views

Why is kosher wine or grape juice rare alone but less so as an ingredient?

My understanding is that wine or grape juice is s'tam yenam and forbidden if handled by non-Jews without having been cooked. (See, e.g., an explanation on chabad.org.) The practical result of this, ...
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133 views

Should a Jewish cashier scan treif items?

On the basis of Vayikra 11:8, is it permitted to work as an employee at a grocery store as a cashier (not the owner of the business), which would entail touching packaged yet non-kosher food items ...
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134 views

Can I eat chocolate melted in a meaty pot and then combined with dairy?

Suppose I'm making some dessert, like cheesecake or ice-cream sundaes, by melting chocolate and pouring it over the dairy dessert. I realize after doing this that the pot I used was fleishig and used ...
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Craving for Non-Kosher Food

If a pregnant lady craves for something not kosher is she permitted to eat it? Source? Does it depend how much she wants it, etc.?
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hot pot and trief

I heard that placing hot pots onto counters or refrigerator shelves could treif the pot (although not its contents) if the counter or shelf is dirty with an opposite type of foodstuff. Is there a ...
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The concept of glatt

Where in the Gemara do you find the concept of meat being "glatt"? Or where do you even find the concept of "kosher lmehadrin."
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Cities' רבנו‏יות's accepting others' food

Years ago, IIRC, I heard the following from a respectable source: By Israeli law, if the רבנות of one city certifies a food as kosher, then the רבנות of any other city must allow that food as an ...
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Bishul Akum: State Dinners

How do we know precisely what foods fall under the "King's Table" exemption to the rule against Bishul Akum? It is obvious that foods like potato chips probably won't be served at a state dinner, and ...
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445 views

Kashering with a potted plant

On Friday, my grandmother made a comment about kashering a knife by sticking it in a potted plant (with very loose soil), something which will not kasher anything. What is the origin of this ...
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1answer
74 views

Mashgiach and a restaurant staying open on Shabbos

This question notes that in Israel, a restaurant cannot receive a hashgacha if they are open on Shabbos. However, in the U.S. this doesn't seem to be the case. What rules do mashgichim rely on to ...
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1answer
100 views

Does a mashgi'ach revoke a store's hashgacha when health department finds insects?

The city health department has cited a kosher restaurant as having violations because they found mice and insects crawling on the food in the kitchen. Since mice and insects are non-kosher, I'm ...
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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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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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142 views

Ramen and a hechsher?

I just came across this article about improvising around instant ramen. Assuming that the flavour pack is independent of noodles, does one need a hechsher on ramen?
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Grill used for neveilot

Assuming I have a grill and someone I know uses it, without my permission, to cook meat from a neveilah (or perhaps not, but kosher species without certification). What is the status of the grill and ...
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2answers
181 views

Off the Derech Parent [closed]

In what instances to kibbud av v'em apply to a parent who has become less religious? For example, of the following points, which battles are worth fighting? Kashrut Shabbat Chaggim tzniut As ...
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238 views

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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2answers
279 views

May a person order food from a vegan restaurant

May a person order food from a vegan restaurant? — assuming you aren't ordering cooked food, to avoid the problem of bishul akum. If your ordering let's say a salad, what could be the problem? ...
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447 views

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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4answers
283 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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What forbids eating in a Jewish-owned restaurant open on shabbat?

Many restaurants in Israel, when asked about their kashrut status, reply that they are open on Shabbat. Thus, no hechsher. This also exists in establishments that would have a relatively easy time ...
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What defines a non-kosher restaurant for purposes of maarit ayin?

There is a known halacha that one shouldn't eat in a non-kosher resteraunt due to Maaras Ayin, even though they serve kosher food also. What defines a non-Kosher restaurant? McDonald's is probably ...
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What other work can a mashgiach do in a kosher restaurant today?

In a kosher restaurant today, must the mashgiach (kosher inspector) spend 100% of his time watching everything, or can he do some other work in the restaurant? How much work? I know this may vary ...
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457 views

When did kosher bakeries, restaurants, etc. start requiring supervision?

If my neighbor Shmerel keeps kosher and otherwise appears to be observant to the best of my knowledge, then I'd be allowed to eat in his house (assuming I'm invited), eid echad ne'eman b'issurin, his ...
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845 views

Eating your own (kosher) food in a non-kosher restaurant?

This was brought to mind by this question: What are the rules about joining your co-workers (or the like) for a meal in a non-kosher restaurant, but bringing your own food? Is it prohibited as mar'is ...
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1answer
249 views

Must I warn people about an untrustworthy restaurant?

What is my obligation to warn fellow kosher observant people about a Restraurant that is claiming to be "Glatt" Kosher, when in fact it has no Rabbinic Supervision at all and the owner's religious ...
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100 views

What is the source for requiring constant supervision in a meat restaurant?

Looking to help out Prof. David Bernstein, in this comment. I've heard that kashrut certification organizations require meat restaurants to have a mashgiach supervising operations at all times. What ...
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417 views

Is the cat figurine thing a problem at kosher Chinese restaurants?

It seems like all kosher Chinese restaurants have this cat-statue thingy in the front: Is there any Halachic problem with that? I assume not, if they're all kosher-certified; but why not?
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Maris Ayin and bags from restaurants

Similar to this question, suppose there is a chain of restaurants that is mostly non-Kosher, but there happens to be one kosher franchise in the chain. The example I am thinking of is that there is ...
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3k views

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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327 views

tuna wrap in non-kosher restaurant

Is there any way to eat a tuna wrap from a non-kosher restaurant, if I have full access to see their ingredients and packaging?
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Do restaurants need a kosher certificate?

There is a concept of "Eid echad ne'eman b'issurin" which means if a person testifies on something that is questionable we believe him. An example would be regarding kosher: if I go to a friend's ...
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Kashrut--idol in restaraunt

A popular restaraunt here in Yerushalayim has a small idol on its cash register. Every paying customer will see it. The staff will answer your questions about it, and recommend reading. Its' ...
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Buddha at Indian Restaurants

Is the Buddha statue (or Hindu statues) a problem at Kosher Indian restaurants? (This is different than the cat question since the cat is only a good-luck superstition and these are actual idols)
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451 views

Invitation to nonkosher restaurant

The question "Keeping Kosher at a secular company" asks about food issues on the job in general. This question is focused more narrowly on "unbalanced" situations: situations where there's an ...
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3answers
798 views

Am I allowed to enjoy the smell emanating from a non-kosher place that cooks using milk and meat mixture?

I know that one cannot gain "Hana'ah" from meat and dairy mixtures. I understood the term "hana'ah" to mean "pleasure" or "benefit". My neighbor makes wonderful-smelling Italian cooking. The smell ...
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2answers
847 views

Do multiple hechsherim (kosher symbols) on a product make its kashrut less reliable?

A former rebbe whom I highly respect advised me not to eat any food product that has more than one kosher certification on it. His thinking was that in principle, the concepts of kashrut and achdut - ...
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1answer
104 views

The levels in kashrut

If a piece of a biblically forbidden food (such as a piece of pork), falls into a bowl of meat. We all know the rule, it's batul bshishim. How about a piece of food which is only rabbinically ...
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128 views

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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105 views

Is pasteurization an adequate stand-in for something being mevushal?

I have a bottle of Lakewood Organic Concord Grape Juice. It is certified by Kof-K as pareve and kosher for passover. However, I cannot find anything on the bottle that would indicate it to be ...
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1answer
83 views

Is honey extracted from a dead bee kosher?

Bees themselves are not kosher, but their honey is. The honey is taken from the hive. If I found a bunch of dead bees and I cut them open and extracted the honey from the body, can I eat this?
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144 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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181 views

Was the honey that Samson ate from the lion kosher?

Was the honey that Samson ate from the inside of the lion (Judges 14:8-9) kosher? There are two premises to my question: 1) The derivation that bee's honey os kosher is from the Talmud, which, ...
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200 views

Why don't kashrut agencies mark on certain cheeses that one must wait 6 hours?

While shopping for Shavu'ot, I noticed that the caterer had marked on their eggplant rollatini "made with 6-hour cheese". I was pleased that they did this, as I had never seen this marking, ...
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Why can't we use products in food that are a דבר מעמיד

מסכת עבודה זרה, דף לה עמוד ב explains how if one curdles milk with the sap of leaves from an orlah tree, the cheese is permitted. The reason is because the leaves are a separate entity from the ...
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Why did they stop packing the gizard, neck and liver inside the chicken cavity?

Why did they stop packing the gizard, neck and liver inside the chicken cavity? I think this practice stopped about 25 years ago. When I was a novice cook, I didn't know that I had to first take out ...