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

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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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Terumot and Maasrot in Israeli Shuks

Ordinary Israeli fruit and vegetable stands do not carry teudah. Does the Israeli government ensure terumot and maasrot are taken at some point? For example, can one taste produce in Machane Yehuda or ...
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166 views

Can a hot water urn that is used throughout the year be used for Passover?

Can a hot water urn that is used throughout the year be used for Passover? If not, what is the reasoning why, if it is only used for water (i.e., not coffee). Would the same reasoning hold for a ...
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134 views

Is vodka made from whey kosher?

There is a new vodka which is made from a whey base. I was wondering what are the halachic considerations,chalav akum is one that comes to mind,as well as basar bchalav?
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45 views

What do we do with Chazaka's that don't seem to hold?

Inspired by this comment, there are Chazaka's (presumptions) and principles of נאמנות (trustworthiness) in Halacha that no longer hold in our practical experience. One example is עד אחד נאמנן ...
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116 views

When is a grafted tree Kosher?

I understand that fruit isn't kosher if it is picked in the first 3 years of growth. However, what about grafting trees? If two branches come from trees that each more that 3 years old, but the ...
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81 views

Efshar LeSoḥato Asur - because or even though?

I'm trying to comprehend the concept of "אפשר לסוחטו אסור" (roughly: "if it's possible to extract it - something prohibited from something otherwise permitted - it is prohibited"). As far as I can ...
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122 views

Hand Cream Glycerin

Is there a problem according to any opinions of using creams and the like because of their treif animal content in the Glycerin of Sicha Kshtiyah:"annointing is like drinking"?
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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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125 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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91 views

Must a non-Jew who eats trief or a nevaila immerse himself?

Vayikra 17:15: And any person, whether a native or a stranger (gair), who eats carrion (nevaila) or what was torn (trief), shall immerse his garments and immerse himself in the waters, and shall ...
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229 views

Status of plastic drip coffee filter cone

What would be the status of the coffee maker cone shown below if it were to be used to make a cup of coffee in a dairy mug? Would it become dairy? Would it remain parve? Here's how it works. It ...
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92 views

Dried insects - permissible?

I just read the website of a Kashrut inspection agency with which I'm familiar, but only insofar as I have seen it many times and tried, but failed, to find any information about the agency's ...
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38 views

Is Ever Min HaHai a Nevelah?

Does Ever Min HaHai have a Din of Nevelah? Does it render food cooked with it Nevelah? If it's meat from a Behemah Tehorah would it be Asur to cook with milk?
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31 views

What do I need to know to properly kasher utensils in boiling water? [duplicate]

If someone wants to kasher their utensils using a pot of boiling water, what do they need to know to do it correctly? Among other issues, consider: Are there issues with how long items need to be in ...
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27 views

Verifying powdered milk

If someone keeps cholov Yisroel but is lenient when it comes to powdered milk, is there a halachically reliable/valid way to verify that a product is made with powdered milk as opposed to fresh milk, ...
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Can an enamelled pan be changed from meat to milk/pareve? [duplicate]

I have a metal pan that is enameled white on the inside, which I have had for more than 40 years, and hardly used. I originally intended it for meat, but now I think I might get some use out of it if ...
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73 views

Can one use a gas grill for both meat and dairy (with lots of other caveats) [closed]

The basic question is, can the same grill be used for meat and milk. But this question has a few sub-questions/caveats and cases that I'm curious about. 1- I'll assume that the same grill grates ...
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59 views

Toasters in motels / cabins

I rented a cabin last week. In the kitchen was a clean toaster - not a toaster oven, but the "retro" kind for 2 slices of bread. Could I have used it? My assumption was it's OK b/c the electrical ...
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70 views

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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64 views

Batel b'shisim on a large scale

Suppose someone is making a huge 50-gallon vat of cholent. Accidentally, an entire bag of milk breaks and spills into the cholent. There is more than 60x as much meat cholent as there is milk, so the ...
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56 views

Cloth and meat and milk

Does cloth retain meat and milk after it is washed? I was thinking that instead of ceramic or plastic plates, we could eat off of woven disks.
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Kosher Coconut Oil Packed in Non-Kosher facility [duplicate]

If the Coconut Oil is Kosher but is packed in non-Kosher facility, is it still kosher?
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Dairy hechsher but no dairy ingredients listed [duplicate]

Suppose that a food product has a dairy hechsher (say, OU-D) but does not have anything obviously dairy in the ingredients list, and does not have "contains dairy" or something similar written below ...
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Do Hashgachos endorse non-proximate halachic claims on label? [duplicate]

Sometimes I find products (under Hashgacha) with halachic information written on the wrapper (away from the hechsher). For example: Some products claim "Pas Yisrael", "Chalav Yisrael" or "Yashan". ...
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Rambam held of Timtum halev?

There is a famous story of the Rambam in the name of R' Chaim Brisker: "When the Rambam visited Yemen, he met a certain gaon of the geonim of the time. And after the Rambam returned home, this ...
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Fruits and Vegetables Prepared With Treif Utensils

Can I eat e.g. a watermelon cut with a treif (non-kosher) knife on a treif cutting board and stored in a treif container?
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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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40 views

Dead Fly on Hot Oily Pan [duplicate]

Possible Duplicate: Does a pot that cooked food with a bug in it need to be kashered afterward? Fly lands on hot oily pan and duly dies. Kashrut implications? (Of the pan, not the fly :p )
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Resources for the Kulot (leniencies) that the Rabbanut in Israel Takes [duplicate]

Possible Duplicate: Mehadrin vs. Non Mehadrin I am preparing a chabura on the leniencies that the Rabbanut in Israel takes. With the understanding that the various Rabbanut branches around ...
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66 views

Waking up fleishig [duplicate]

I once heard that you cannot wake up in the morning being fleishig, meaning if you go to sleep for the night, even if you sleep less than 6 hours (or whatever time you wait), you are pareve and can ...
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247 views

How was kashrut affected by Science?

I have been reading a lot of questions concerning kosher foods, to get a better understanding of what it means for something to be kosher. To an atheist, this site is very helpful. But as a chemistry ...
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420 views

Can Jews eat non-Kosher meat?

Is it permissible for a Jew to eat meat that isn't treif or forbidden flesh if it was not purchased from a kosher butchery? I was told by a Muslim friend of mine that non-halaal meat (except pork) ...
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Kashrus of Pepperidge Farm Goldfish

Ok, this is a little lighthearted but so be it. I am curious why I can't find the answer to this online. I was once told by someone involved with a nationwide kashrus organization that Pepperidge ...
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130 views

The Manna and non kosher taste

The Gemarah in Yoma 75a explains that the manna imparted all flavors except five flavors. Based on this idea, can one have in mind the taste of pork while eating the manna, or do we say that anything ...
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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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Why does the use of horse manure as fertilizer not make produce non-kosher?

Horses are non-kosher and its manure is also non-kosher. If you use the manure as fertilizer on, say, potatoes, isn't there some concern that the potatoes may absorb some part of the manure? If so, ...
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163 views

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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180 views

Chap stick Flavored Kashrut [duplicate]

Possible Duplicate: kashrus of mouthwash, toothpaste, lip balm Whats the Kashruse etatus os the flavored Chapsticks are they allowed or not?
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Does flavored drip/ground coffee require a hechsher?

It seems like plain unflavored coffee does not need a kosher certification. Does flavored drip/ground coffee require a hechsher?
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143 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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335 views

Carnation Instant Breakfast substitute

Is there any non-dairy (or chalav yisrael) substitute for Carnation Instant Breakfast?
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59 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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2answers
122 views

Keeping Kosher and Leather

I would like to ask a question regarding something I am quite confused by. Why is it okay to wear leather from an animal slaughtered not in a kosher fashion yet you cannot eat that animal's meat? To ...
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1answer
117 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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1answer
82 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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81 views

Can you eat cheese with bread-that-was-cut-with-a-meat knife?

If you intentionally cut bread slices with a meat knife, can you then eat that slice of bread with dairy products?
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Rav Moshe milk and tuna

Rav Moshe holds that tuna needs a masgiach timidi for it to be consumed,every fish needs to be checked for the simanim.However, by milk he brings a savarah that the government is sufficient and a ...
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Waiting to reveal Kosher issue in order to get to the root of the problem

Suppose a Mashgiach realizes that a store is selling Treif meat, however is unsure as to the source of the problem. If he announces immediately that this store is selling something not Kosher he may ...
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What is the difference between kosher and permitted food?

I wish to allude to this answer, which distinguishes between "kosher" and "permitted" (and "non-kosher" and "forbidden") foods for purposes of knowing when to make a bracha. Can someone explain this ...