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

learn more… | top users | synonyms (3)

6
votes
2answers
162 views

Is it permitted to eat dirt?

If you find small (but visible) pieces of dirt on your food or drink is it permissible to eat it? Are there sources that discuss this? By dirt I mean "an unknown foreign object that makes the food ...
5
votes
2answers
397 views

Can you kasher earthenware or porcelain utensils?

I read in the Kitzur Shulchan Aruch of the Yalkut Yosef that if one cooked dairy in a earthenware meat vessel, and if the vessel is valuable, then one can perform hagalah on the vessel three times ...
11
votes
2answers
811 views

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 ...
8
votes
2answers
297 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 ...
11
votes
4answers
4k views

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) ...
4
votes
1answer
324 views

Gigantic Tiger Fish - Is it Kosher?

Is this fish Kosher? It apparently has both fins and scales. Is there any problem with its having teeth, or its not having been discovered until now (and therefore being outside of our Mesorah)?
10
votes
2answers
757 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 ...
7
votes
1answer
194 views

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 ...
8
votes
1answer
296 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 ...
7
votes
1answer
115 views

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 ...
12
votes
5answers
849 views

Leniencies for someone keeping Kosher in a non-Kosher home

My family is not frum, but they do not eat non-kosher meat at home, although they do eat other not-certified-kosher products, including cheese. They don't mix meat and milk, but they do wash meat and ...
5
votes
2answers
382 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 ...
1
vote
2answers
77 views

Online resources for KFP products

Does anyone have a reliable list (or lists) of Kosher for Passover products that is (or are) available online? {There are several that I've used in the past, but they seem to be cut off in their ...
5
votes
0answers
2k views

Is Rum Kosher for Passover?

Specifically, is Bacardi Superior Original Premium Rum kosher for Passover? The label doesn't say so, nor does it say that it's kosher in general for that matter, but since it has a sugar base, ...
10
votes
1answer
584 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 ...
6
votes
2answers
1k views

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 ...
4
votes
2answers
171 views

What makes something chametz?

Can I a recipe that uses flour but not water? As kids, we all learned that if the water and the flour touch for more than 18 minutes, then the matzo is chametz. When 20 ingredients are combined, ...
5
votes
2answers
595 views

Does instant coffee (regular - not decaffeinated) need a Hashgacha?

There are certain raw ingredients that do not require a Hashgacha (salt, water, eggs, etc.). Does instant coffee (regular - not decaffeinated) need a Hashgacha? If yes, why?
6
votes
1answer
530 views

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 ...
10
votes
2answers
433 views

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, ...
4
votes
0answers
495 views

Using a non-kosher toaster oven

What is the permissible way to use a non-kosher toaster oven? My thought process was that, when cooking milk in a meat oven, the covering of the dish and the rack makes it acceptable. Would covering ...
14
votes
2answers
234 views

How big, and what exactly, is “Kedei Kelipah”?

{Kedei Kelipah is a term used in Kashruth for the amount of something that needs to be removed in order to allow one to treat the remnant as Kosher. (This only applies under certain conditions, which ...
6
votes
4answers
277 views

Is autocannibalism halachically prohibited?

I was wondering if sucking your own blood or biting at your own scab or otherwise consuming yourself was halachically permissible, since, as far as I can tell, humans are not kosher. Even so, it would ...
7
votes
2answers
2k 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 — ...
11
votes
3answers
495 views

Is Okapi meat Kosher?

Is the Okapi a kosher animal? According to its Wikipedia page, it is most closely related to the giraffe, which everyone seems to agree is kosher. A quick Google search tells me that it chews its cud. ...
8
votes
4answers
339 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 ...
10
votes
2answers
299 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?
8
votes
2answers
281 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 ...
23
votes
5answers
754 views

How to respond to “but he does”

I mentioned to my coworker that I can't eat Domino's pizza, not even without meat, as it's not kosher. He pointed out in response that a fellow coworker of ours, whom I'll call Josh, and who is ...
10
votes
4answers
179 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 ...
3
votes
1answer
131 views

Seared Sushi Bishul Yisroel

Certain Sushi require the searing of the fish on the outside. Does this process require a Jew light the torch used to do the searing or is it not required? I have seen that some stores do and some do ...
11
votes
1answer
218 views

In a bulk food store, must I ask to see the original label every time I return and buy my favorite food?

I know that where I live, some foods don't need kosher certification. But most do. Say I go to a reliable bulk food store, ask to see the original bucket that a certain food came in, see a reliable ...
9
votes
1answer
410 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?
1
vote
1answer
413 views

Is Japanese whisky kosher?

Here's an interesting article about whisky produced in Japan. Have any of the Kashrut authorities said anything about whether such whisky requires supervision? Do any such whiskies have supervision? ...
12
votes
2answers
999 views

If chicken eggs are parve, is caviar considered “fish”?

Chicken is classified as "meat" and cannot be eaten with dairy. Chicken eggs are considered parve and can be eaten with meat or dairy. Fish and meat cannot be eaten together either. Does the same ...
3
votes
1answer
153 views

Purple/Red Cabbage kashrut issues

Funny thing happened to me tonight. I was buying some falafel and noticed that they did not have any "purple cabbage" (a.k.a. red cabbage) as a side dish option. I asked if they had any in back, and ...
12
votes
1answer
611 views

Kosher Cheese without a posted hechsher

I live in a remote area of Canada and don't have access to a kosher market to buy cheese. There are many European imports in the local super, and I was wondering if there is a list of cheeses which ...
5
votes
1answer
88 views

Kashrus Book in Hebrew like Shemiras Shabbos k'Hilchasa

Does anyone know of a good book on kashrus (in Hebrew) that accomplishes for kashrus something similar to what Shemiras Shabbos k'hilchasa does for Shabbos?
8
votes
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? ...
7
votes
1answer
120 views

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 ...
8
votes
3answers
987 views

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 ...
7
votes
3answers
593 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?
4
votes
1answer
4k views

Reliability of the OKS

I dont know if this type of question is allowed but I was told to ask it here The symbol is on some restaurants in the NY tri-state area (like Crumbs Bake Shop for example) and I have heard of quite ...
-1
votes
2answers
281 views

Can jews eat unclean animals when blood is removed?

http://www.mechon-mamre.org/p/pt/pt0512.htm Notwithstanding thou mayest kill and eat flesh within all thy gates, after all the desire of thy soul, according to the blessing of the LORD thy God ...
4
votes
3answers
730 views

kashrus of mouthwash, toothpaste, lip balm

What are the halachic and factual issues involved in, and various rabbis' holdings on, whether flavored mouthwash, flavored toothpaste, and flavored lip balm need to be kosher, or need a hechsher ...
7
votes
4answers
679 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?
7
votes
3answers
116 views

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?
10
votes
2answers
606 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 ...
15
votes
4answers
710 views

What is the basis for eating in someone's house without a kashrut certificate?

No one asks for a kashrut certificate to eat in someone's house; they just make a rough judgement based on the host's reputation (the way they dress or behave, the circles they move in, etc.). That ...
16
votes
4answers
8k views

Is there a problem with Triangle K? If so, what?

I want to know what the OU's or any other Orthodox kashrut agency's problem is with Triangle K. I have read about the Ralbag family which founded and runs the Triangle K and they are clearly Orthodox. ...