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

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Is whisky matured in a sherry cask Kosher?

Is whisky matured in a sherry cask Kosher? I know there is a Machlokes about this. Who holds what?
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Cold smoking and kashrut

related Cold smoking is a process by which food is cured by contact with smoke which fills the whole vessel but does not [ideally] exceed 80˚F, which is well below yad soledet (at least for my hands) ...
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Is this Triangle K item (Vegan jerky) one of the items that is acceptable by other agencies as well?

Is this Triangle K Parve item (Vegan jerky) one of the items that is acceptable by other kashrus agencies as well? The item is called Primal Strips meatless vegan Jerky. it has a triangle K with the ...
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2answers
206 views

Do roasted peanuts in their shells require a hechsher?

I know that non-Israel grown raw peanuts in their shell are considered plain "vegetables" / legumes and do not require kosher certification, as other untouched fresh fruit / veggies. Shelled peanuts ...
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1answer
53 views

Making a Berachah on minhag prohibited foods

Related: Making a Berachah on rabbinically prohibited foods, Bentching after accidentally eating prohibited foods Can you say a bracha on something that you don't eat because of minhag? This is ...
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If I left my kitchen under the control of someone who is a Gentile or not Shomer Shabbos, is it still kosher?

If I left my kitchen (or set of kosher dishes, etc.) with someone who is a) not Jewish or b) Jewish but not shomer Shabbos--in such a way that they could access it and hypothetically do anything they ...
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1answer
47 views

Restaurant serving meat during the 9 Days

Can a kosher restaurant serve meat during the 9 days? Asked another way, can I go to a "kosher" restaurant that does serve meat during the 9 days, and simply not eat meat?
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Can meat grown from living cells be kosher? Is it eiver min hachai?

Earlier questions such as In vitro meat — further questions dealt with meat grown from stem cells of slaughtered animals. This question is specifically about meat grown from stem cells taken from live ...
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1answer
62 views

Why do we benefit from chocolate bars with no hechsher, but not eat them?

We don't eat chocolate bars with no hechsher. What are we afraid might be in them, whether through the equipment or directly? Let's take the case of a dairy chocolate bar that wouldn't be served in ...
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3answers
605 views

What rules need to be followed in order for a non-Jewish professional chef to cook Kosher food for a Jewish customer?

I'm a non-Jewish professional chef in a restaurant, and I am marginally aware of kosher dietary restrictions. I know that the food itself, as well as the pots, pans, and other utensils used in ...
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1answer
650 views

Creating a crowd-sourced database of non-dairy OU-D products

Several questions/answers on this site have pointed out that the OU-D hechsher does not always mean that the product is actually dairy. (But that it is, in reality, "OU-DE" [dairy equipment]. See here ...
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1answer
49 views

Is it permitted to benefit financially from a meat/milk mixture that is rancid / rotten / otherwise inedible?

One is not permitted to derive benefit from a mixture of meat and milk. I'm curious -- would that prohibition still hold if the meat & milk mixture were inedible? I have no idea how one would ...
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1answer
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Why aren't any of the main American brands of chewing gum kosher?

These days, you walk into any American supermarket, you can find kosher chocolate bars, kosher jelly beans, kosher all sorts of stuff. I understand why the gummy worms aren't kosher, they contain ...
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1answer
145 views

Is Cup-K reliable?

I've recently seen a hashgacha around NYC called Cup-K or CupK. However, I have been able to find precious little about it and what I have found seems mostly to consist of unsubstiatable rumours. Does ...
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1answer
106 views

Must one use a separate grill for meat and fish?

As there is a prohibition of mixing meat with fish because of sakana ("danger"), I assume that if one has a small grill, one cannot grill meat and then grill fish (or vice versa) without cleaning the ...
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118 views

How many degrees of separation from food does one have to kasher?

I understand that the sink, the dishwasher, and sponges, etc. all need to be kashered, presumably because they touch things (plates, utensils) that also touch food. But how many degrees of separate ...
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1answer
226 views

Does jam have the halacha of duchka d'sakina?

The Chochmas Adom in 49:9 holds that all fruit have the halacha of duchka d'sakina, and that if you cut a fruit with a meat knife which was not definitively clean, you need to scrape off the outer ...
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Which hechsheirim are reliable? [closed]

How can I find out which hechsheirim are reliable and which ones aren't?
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Is Extra virgin olive oil kosher by default?

I was given extra virgin olive oil as a gift from Italy (picture below), and I wanted to see if that type of olive oil is treated like fruits and vegetables, or does it needs to have certification on ...
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4answers
488 views

What qualifications are necessary to become a mashgiach?

I had thought that mashgochim (kosher kitchen supervisors) had to have semikkha or darn close. But people have been telling me that all you need to do is "know the laws" of kashrus, which they seem to ...
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1answer
128 views

Alcohol sales despite government monopoly

Many places have government imposed alcohol monopolies and private retailers of alcoholic beverages are forbidden. As alcohol, especially (red) wine, has a central place in Jewish practice and as ...
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1answer
50 views

Do you have to check bagged lettuce with a hechsher?

I am aware of this question and of the CRC's lenient policy on lettuce without a hechsher. However, everywhere I've been, it is assumed that one needs to check (pre-washed, even triple-washed) bagged ...
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1answer
216 views

Frozen raspberries without supervision

My wife was told by a friend that a certain legitimate kashrus organization says that frozen raspberries do not require supervision, and upon calling the organization, she was told that the process ...
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2answers
193 views

How can yeast be kosher lǝPesach?

I was once reading the ingredients on a pack of Bissli (with a Pesach hashgacha) and saw that it contained yeast. How can this be?
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1answer
51 views

Are potatoes considered a food that is fit for a king's table?

Are potatoes subject to the prohibition of בישול עכו״ם? Are they considered foods that are fit for a king's table? This story I found quite fascinating and I wonder if it has any bearing on this ...
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Do those who keep Cholov Yisroel eat products marked “K-DE”?

Some hechshers have the designation "DE" for "Dairy Equipment." Do those who keep Cholov Yisroel eat food with this designation? (I am mostly talking about the minority who consider [American] cholov ...
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How can I make my home kosher enough for ~most Jews to be guests in? [closed]

Let's say I wanted to set up a kitchen/home that was kosher enough for most of the Orthodox spectrum to feel comfortable eating and staying in. (By "most," let's say the first two standard deviations ...
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64 views

Japanese Ritz crackers and OU certification

In Japan there are some food products that are identical to American brands but with Japanese packaging. For example, here is the Japanese box for Ritz crackers: Ritz are certified kosher in ...
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1answer
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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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1answer
248 views

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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55 views

Who holds that Cholov Yisroel is not a chumra?

Which groups or authorities consider Cholov Yisroel to be normative halacha and not a chumra? (Possibly equal to, "Who considers cholov stam treyf"?)
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120 views

Kashruth Issues with Dog Food?

If someone is keeping a vegetarian/milk household, and then they acquire a dog that eats meat based dog food products, what potential Kashruth issues might arise? Would there be difference in Kashruth ...
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1answer
47 views

Gardening produce - fertilizer with blood meal, kosher?

So as I'm getting ready to grow citrus trees and veggies, I went on the hunt for fertilizers (individual household, not a commercial farmer). I noticed that a whole lot of fertilizers use an ...
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1answer
83 views

How can one eat non-certified kosher Israeli produce?

In Israel, there are many stores that are not certified kosher that sell produce grown in Israel. What is the procedure for taking teruma and maaser, and is there anything else a buyer would need to ...
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31 views

Malibu coconut rum Kosher?

Anyone has an idea if malibu coconut rum is kosher?
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Can you use a not kosher knife sharpening stone/wheel [duplicate]

I learned the the sharpening stone kashers the knife But are there any sources regarding the use of a sharpening stone/wheel that was used for non kosher knifes (possibly used even when dirty knives)...
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Will parve item remain so within a fume-proof vessel heated inside a meat stove? [closed]

I'm laying out my kitchen for kosher and have decided to make my stove and oven all meat. I'll have a separate nook for cooking dairy. The problem is baking hallah. Normally that is a parve recipe. ...
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2answers
79 views

When does a kosher place need a mashgiach temidi?

I notice that some kosher places have a mashgiach (kashrut inspector) that vsists the place occasionally. Others have someone there permanently. What criteria is used to decide if a place needs a ...
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2answers
52 views

What dishware material is microwave safe and also kasherable?

I'm confused by some of the rabbinical advisory websites regarding what dishware can be kashered. Evidently glass and ceramic, the most convenient microwave safe materials, according to Askkenasi ...
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What is an effective separator for adjoining steel sinks divided into meat and dairy?

Chabad recommends: "...Separate sinks for washing dishes and preparing foods are recommended. If the two sinks are adjoining, there should be an effective separation between them so that no water or ...
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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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2answers
556 views

Should I run meat towels and dairy towels in different laundry loads?

In part of learning to keep a kosher home, I understand I need to keep two sets of kitchen towels, tablecloths, etc. How do I maintain these items in a kosher state? Should the towels be run through ...
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Davar charifs and chometz

"Davar charif" is a term in kashrus which refers, as I understand it, to sharp or caustic foods which may absorb flavor from a knife used to cut them, rendering them, say, fleishig if the knife is ...
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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 ...
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82 views

Does fish need to be inspected for non kosher fish, flies and worms?

I'm not sure if commercial fish is inspected in any way. I know that most commercial fish is caught in nets, so I don't think that bait is used. When individuals go fishing, they use worms, flies, or ...
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Can a Jew follow another religion's dietary laws?

Suppose another religion has dietary laws that overlap with those of Judaism. For example, Zoroastrianism prohibits eating all land animals and prohibits eating various kinds of fish and other sea ...
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2answers
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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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1answer
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Kashrut of rennet for cheese & Difference between rennet and gelatin

I actually have 2 questions which are related. Traditionally, making cheese involves using rennet, a substance derived from animal stomach. If the rennet is derived from a non-Kosher animal, it is ...
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1answer
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Is checking for bugs halachically required?

Various methods of checking for bugs in produce, i.e., lettuce, are officially recommended by kashrus agencies and other halachic professionals. However, is use of one/any of these methods--or even a ...
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Is the use of the term “Glatt Kosher” a case of “Genivat Da'at”?

My understanding of the term "Glatt kosher" which I heard from 3 different mashgichim (kashrut supervisors) The term "glatt" means "smooth" and applies only to beef and lamb. (I would assume that it ...