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

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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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74 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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116 views

Can bleach be sufficient to cleanse for Passover?

A couple years ago I (Conservative) was asked by my wife (Baptist) to educate her church by running a Seder for them. I cleaned the kitchen and serving areas as best I could, vacuumed the carpets, ...
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312 views

Can you eat beeswax?

To my knowledge there is a lengthy discussion as to why bee honey is kosher to eat. I am unaware of any discussion of bee wax. I am told by my local grocer that many large distributors of produce coat ...
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162 views

If we don't cook a calf in its mothers' milk, why can we use eggs with chicken?

The Torah says that one should not cook a calf in its mothers' milk. This is the basis for the prohibition of eating milk and meat together. If this is the case, why is it not also illegal to cook a ...
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Can a deep-cover agent on active assignment violate kashrut to blend in with targets?

I have no idea whatever what the Mossad's practices are when collecting human intelligence, but I would be certain a small percentage of people in CIA would have to be Jewish owing to ...
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117 views

Bishul Akum for Sefardim

There is a difference of opinion among sefardi and ashkenazi poskim regarding bishul akum. For ashkenazim it is enough if a Jew lights the oven and a non-Jew cooks the meat. For sefardim, a Jew must ...
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943 views

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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97 views

What to do when finding blood in eggs

When cooking something with eggs, I always check the eggs for bloodspots. But I wonder, if I find a blood spot, do I need to throw the whole egg away or can I take the blood out with a spoon and use ...
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72 views

Limited nature of products considered kosher

I was reading about the laws of bitul, though I've never learnt about them properly in any detail. One example given in the book (An Artscroll book on kashrut) was that you can assume that a grocery ...
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1answer
122 views

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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Allowed to help prepare / serve “milk and meat” meal in homeless shelter?

Imagine a case in which one is invited to volunteer with a group that is preparing and serving a meal at a homeless shelter. The group has decided on a menu that includes milk and meat together in ...
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306 views

Halachich law about inviting a Jew for dinner by a Gentile

" I know that Observant Jews are commanded by law to eat Kashrut or kosher, so I as a Gentile can invite my Jewish friend for having dinner in one of marriage or engagement function ? what food items ...
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321 views

In light of modern science, why is bee honey still kosher?

My understanding of why bee honey is kosher is because the talmud says that the honey is not a by-product of the bees. They simply store the nectar in their body to transfer it and then expel it, ...
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77 views

How come delicatessen offer meat sandwiches AND cheesecakes as deserts?

How come delicatessen offer meat sandwiches AND cheesecakes as deserts? Were people mixing meat & dairy in eastern european communities ? Or were they not really part of traditional ashkenazi food ...
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88 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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133 views

Refrigerators and shabbat

I have a friend that became Habad a while ago, and lives with her non-orthodox parents. She leaves the house for shabbat, but insists that her parents turn the lights off in the fridge, because if ...
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Is the Halachic concept of taste transfer accepted by scientists and chefs?

Halacha (Jewish Law) tells us that when food is cooked in a pot, that pot absorbs the taste of that food (to what degree is impossible to know). When that pot is then used to cook something else, the ...
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110 views

Is a chicken egg considered “Aver min Hachai”?

The question of Chicken eggs and why they are Pareve and not Meat has already been addressed. My question is why are they not considered "part of a live animal" and therefore prohibited to eat to Jews ...
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143 views

can frozen yogurt be OK without storefront certification?

It's increasingly common for frozen yogurt chains to have their central production plants be certified kosher. Examples include Pinkberry, Red Mango, and Yogurtland. When this is the case, are there ...
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102 views

Do hechshered leafy vegetables mean that they have no bugs?

If I buy (for example) frozen broccoli in the store with a hechsher, is it required to check for bugs? Does the hechsher signify that the vegetables have already been checked for bugs and are free of ...
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572 views

If the label says O-U D, but the warning label for allery sufferers says “no dairy”, do we consider the product dairy or not?

I attended a fantastic lecture on kashrus and dairy products by Rabbi Zushe Yosef Blech, shlita, who was asked an interesting question: Can you eat Oreo cookies after a fleishig meal? It was pointed ...
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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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1answer
213 views

Does Vegan Certification Have Any Halachic Weight?

There are a number of organizations that offer Vegan Certification for food products; the concept is the same as kosher certification, (though that is the only similarity). Examples would be Vegan.org ...
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Hechsher on Trans Fat

The National Academy of Sciences (...) has concluded there is no safe level of trans fat consumption. There is no adequate level, recommended daily amount or tolerable upper limit for trans fats. ...
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Cultured Beef and the 7 Laws of Noah

I know there have been questions on whether lab meat would be Kosher or not, halavi or besari... I see another potential debate. According to http://culturedbeef.net/what-is-it/, "Cultured Beef is ...
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What is the kashrut status of synthetic/in vitro meat? [duplicate]

It was reported in the news today (at least in the UK) that another step forward has been made towards the creation of "synthetic meat". From BBC News: The world's first lab-grown burger was ...
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386 views

Does extra virgin organic coconut oil have to have a hechsher?

I am specifically referring to Coconut Oil. I know that my question is similar to this one: Is Extra virgin olive oil kosher by default? but My question is also about non-olive oils. Due to the huge ...
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1answer
86 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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165 views

Are plants that exhibit rapid plant movement considered non-Kosher animals?

There is a question here asking if sea sponges are Kosher. The answers seem to center around the idea that regardless of if they have animal cells, a halachic classification might depend on how it ...
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1answer
144 views

Equipment used for cooking by a non-Jew

I've heard that even if kosher ingredients and equipment are used, the food cooked (i.e. using heat) by a Gentile isn't kosher in most circumstances. I am wondering what the opinions are regarding ...
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Is aged beef salted and soaked before or after the aging process?

Some kosher butchers are now offering aged beef. Is this meat salted and soaked before or after the aging process?
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531 views

Can Jews eat hunted animals?

Can Jews eat hunted animals? That means the animals are dead before getting their necks cut. I do not think ancient Jews were hunters, but I would be surprised if I were to find that there was no ...
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198 views

Would coffee in beer be kosher?

It is common practice to allow drinking coffee pretty much anywhere. It is also widely accepted to drink unflavored beers. Would that logic allow one to drink beer that is commercially brewed and/or ...
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216 views

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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Are Dunkin' Donuts kosher without hechsher?

Can one (who is not strict about cholov Israel) eat Dunkin' Donuts without a kosher certificate?
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kosher food ideas without refrigeration

What kosher food should I pack for a one-week trip? I won't have access to a fridge; and no kosher food will be available at my destination. The only food idea I can think of is tuna. That would ...
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Reliance on non-Jews for removing bugs

In discussing washing salted meat according to Halachah, there is a lengthy discussion about whether and when we can rely on a non-Jew who claims to have done it. The Tur (Y"D 69:10) says that there ...
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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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393 views

Premixed Gatorade and Powerade aren't cheap. I'd rather buy something powdered or concentrated. What's kosher?

I'm sick today; I think it might be (mild) gastroenteritis. DuPont et al. write that "the most important form of therapy consists of fluid combined with electrolytes", citing the CDC. I'd rather use ...
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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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247 views

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
165 views

Artificial non Kosher food

According to Vayikra we have: ז וְאֶת-הַחֲזִיר כִּי-מַפְרִיס פַּרְסָה הוּא, וְשֹׁסַע שֶׁסַע פַּרְסָה, וְהוּא, גֵּרָה לֹא-יִגָּר; טָמֵא הוּא, לָכֶם.‏ 7 And the swine, because he parteth ...
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153 views

Can one trust the Kashrut of Alcoholic Beverages in bars?

Kosher Organizations, like the CRC (Chicago Rabbinical Council, supply lists of alcohol recommended for purchase and consumption. May one purchase these alcoholic beverages from a bar (where the ...
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209 views

food containers - why is hechser needed? [duplicate]

I want to buy a vacuum sealer for food. The vacuum bags do not have a hechsher. Normally, I buy ziplock bags that are OU. To keep this general, I am hoping someone can elaborate on the reason and ...
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84 views

Finding Kosher Fruit Flavored Snacks

Anyone know of a kosher fruit flavored snack, similar to these? According to oukosher.org there exists a "Scooby-Doo! Fruit Flavored Snacks 10 Count Carton" that is OU Parve, but I cannot find it ...
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251 views

I am or was a religious jew and purposely ate non kosher

I'm a religious Jew. I kind of lost faith and ate non-kosher purposely, and now I feel so bad with myself that I want to die. What should I do? Is there any type of repentance I should take upon ...
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3answers
278 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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225 views

Confectioners glaze - non alcoholic

Recently I read an article by Rabbi Yirmiyohu Kaganoff regarding confectioners glaze. Confectioners glaze is manufactured from shellac, "a glandular secretion of the lac insect, Kerria lacca, a ...
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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 ...