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Questions tagged [kashrut-kosher]

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

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For a person who doesn't eat dairy are there any halachic or health issues with using a meaty pot to cook all food and drink?

For a person who doesn't eat dairy and won't be sharing food or drink with anyone, is there any halachic problem with using a meaty pot to cook all food and drink? Also, it is advisable to eat meat ...
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Does boiling lettuce remove insects?

If one were to submerge lettuce in a pot of boiling water, cover the pot with a lid, let the lettuce boil for a minute and then discard the water; would doing so remove all the bugs?
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Why only “Basar” Shenitaleim?

The concern of basar shenitaleim is that, somehow, kosher meat, unguarded and not recognizable, could be replaced with non-kosher meat. However, chicken, fish, milk and cheeses, and even vegetables ...
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What's worse: eating a cheeseburger or eating pork?

Obviously both are assur, but suppose one is stuck on a desert island and has only these 2 options. What should one do- is eating one of these worse than the other?
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Checking strawberries with a magnifying glass

Most resources mention some type of process of rinsing with detergent etc. Can I just use a magnifying glass in order to see a potential bug? Also, why do the resources say to use soap or detergent.....
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bracha on unflavoured seltzer if one's not thirsty

It's well known that a bracha isn't made on plain, unflavoured water if one isn't [that] thirsty, the question is: what about plain seltzer (e.g. refreshe from Vons)? Is the addition of the bubbley ...
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Halachic difference between a medicine and a supplement?

Dietary supplements are a huge industry right now. Many people are taking a variety of vitamins, nutrients, and herbs in the same way they would take a prescription from a doctor. The problem with ...
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Can Jews buy commercial challah at Whole Foods?

I know Whole Foods supermarkets have challah bread. I am not Jewish. But I once bought challah bread at Whole Foods and ate the whole bread in one sitting. It tasted like . . . bread. I am aware that ...
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Can open kosher condiments (e.g., ketchup) found in a rented apartment be used?

Let's say you rent an apartment and find open kosher condiments like ketchup in the fridge, can they be used?
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1answer
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Is fruit sold in bulk at the store kosher?

At some supermarkets / stores, there is a "bulk fruit" section. I'm not talking about selecting fresh fruit off of the shelf or "fruit island" as is seen in some stores, like where they keep the ...
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May one eat parve food heated in a dairy microwave while fleishigs?

Assuming the microwave is clean. I am not sure what the relationship between a microwave and oven is.
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Are crayons allowed?

If a non-toxic (but also non-food) wax crayon is known/suspected to contain both meat (e.g. stearic acid; see e.g. here) and milk (e.g. dairy-derived palmitic acid), may one use it or does it qualify ...
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Non-toxic crayon bliyoth

Would a non-toxic, non-food substance, such as crayons, intentionally melted in a pan render it unkosher? Does it matter if the crayons are known/suspected to contain both milk and meat (e.g. tallow/...
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Why are shellfish not kosher? [closed]

I have tried to read up and understand why shell fish aren't kosher, but the reasoning for scales/fins seems to be able to apply to shellfish as well. Is there any logical explanation?
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Is a convert considered a real Jew if not keeping kosher? [duplicate]

If a person converts to Judaism is he/she considered a real Jew if he/she doesn’t keep kosher? I’m concerned because my mother converted properly and in accordance with Jewish law, but she never ...
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Eating treif b'shogeg [duplicate]

If I ate a hamburger that I thought was kosher and after I finished it I found out it was not kosher, where does that leave me halachikly speaking. I know in Mishnah Torah it says (Blessings 1:19) ...
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Is unsupervised commercial kosher food OK? [duplicate]

Say a Jew starts selling food commercially. He keeps strict kosher, but does not buy kosher supervision to keep his prices down. His customers are his many friends, who know him well and trust him, ...
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What blessing does one make on non-kosher food? [duplicate]

Is a blessing made on non-kosher food that one is normally forbidden (אסור) to eat when one is in an exceptional circumstance? (like for example, starving and without other food) The food becomes ...
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If one makes a bracha on something not Kosher should he eat it to avoid saying G-d's name in vain or not?

If one makes a bracha on something not Kosher (meat and milk,chicken and milk, pork…) should he eat it to avoid saying G-d's name in vain or not?
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Would Noahides be required to eat kosher meat?

Would Noahides be required to eat kosher meat because one of the Noahide laws is not to eat blood and since non-kosher meat doesn't soak and salt their meat to get the blood out wouldn't that by ...
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When can kashrut certification be withheld?

In today's news (11 Dec 2018): "Rabbis from the Vaad HaRabanim of Flatbush, which grants kosher certification, threatened to pull their supervision of the Garden of Eat In and Orchidea if [a certain]...
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1answer
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Can a Jew use a knife that belongs to a non-Jew?

I know there's a whole thing about a Jew being allowed to use the kli of a non-Jew without tevilah, but I don't know the extent of that allowance. I was part of a conversation on facebook where ...
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Are “kif kef” bars chalav Yisroel?

Specifically, I am looking at Israeli Kif Kef bars - the ones sold in the States. Presumably they are identical to the ones from Israel. See picture. The hechture is Bedatz.
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Leaving drink out over night

For those who hold that leaving water out uncovered is an issue (Cf. The Gr"a), the same stringency applies to any water-based beverage - like tea, coffee, sugary drinks etc. However, the halacha ...
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1answer
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Does bagged ice need a hechsher?

I am looking for an answer which is a bit more expansive than "Ask your LOR". I have not been able to find "bagged ice" on the lists of any kashrut agencies that post on their lists on the internet.
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Kashrus of Cotton Candy Grapes

Are the "cotton candy" grapes kosher for consumption? I know Kashrut.com says they are kosher, but am wondering if one of the main organizations made a statement on them. (Not sure if the grape ...
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Should one have separate reusable water bottles for meat and dairy meals? [duplicate]

If I were to use a reusable water bottle should I be concerned about using one when I eat dairy and another when I have meat, or can I just wash it out?
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Are there ways of reheating non-kosher food in a kosher oven

Are there ways of reheating non-kosher food in a kosher oven without rendering the oven non-kosher?
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1answer
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Does ever min hachai transfer to utensils?

When meaty/dairy/treif food is cooked in a pot, the taste (ta'am) of the food is transferred to the pot. When the pot is reused for other food, that food becomes meaty/dairy/treif as well. Likewise, ...
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1answer
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How to cook with a metal disc on a treif glass top stove?

The Star-K gives this advice for kashering a glass top stove: https://www.star-k.org/articles/articles/kosher-appliances/2931/kashering-glass-corning-halogen-or-ceran-cooktops/ The sentence that I am ...
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1answer
76 views

Can one eat together two salads with onions (charif) cut with different knives?

Two salads have been prepared and both have raw onions. One salad was prepared with meaty utensils and the other prepared with dairy utensils. The onions were chopped with their respective knives. All ...
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Is all 100%-synthetic food kosher?

If, at some point in the future, ALL food is manufactured entirely from individual atoms and molecules, and made to look and taste like anything you want, would there be NO food restrictions for Jews ...
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Graven Image Question

Can someone give me sources from Tanakh and Halakhah on why it is permissible for a Jewish [certified kosher] bakery to make images from Christianity and their winter holiday? And if it is permissible,...
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Why are castrated animals slaughtered as Kosher beef?

Castration and dehorning of cattle is the common practice in the cattle industry. This a violation a basic Noahide Law ref Tractate Sanhedrin 56a-b: שבע מצות נצטוו בני נח ...רבי חידקא אומר אף על ...
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What are domestic animals that are kosher to raise and quiet?

I want to get an animal to raise and want to be sure to comply with halacha. So I would like to know which animals are kosher to raise in a Jewish home? I am particularly interested in animals which ...
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2answers
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Do fortune cookies need to be Pat Yisrael?

Certain products are made from one of the five major grains but aren't Tzuras Hapat, i.e. they don't look baked. As a result, they can be eaten even if one has taken upon themselves to eat only Pat ...
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1answer
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Kosher food on cruises?

I will be going on a cruise. I know that some cruises have Kosher menu selections that are actually verified Kosher, not just “Jewish Style meals”. My question is that how can these be kosher without ...
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2answers
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Kosher glycerin automatically safe to eat

First of all, I would like to apologise for my ignorance; as a Christian, for me the purpose of the Law is to bring us closer to understanding the mentality, so to speak, of the Almighty, and ...
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Is this squid with scales kosher?

A scientific paper in Nature in 1960 entitled "Lepidoteuthis grimaldii—a Squid with Scales" describes a squid that was found in the contents of a whale and (at the time) was the fourth specimen of its ...
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1answer
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Change drinking glasses between fish and meat?

The Rema writes (YD 88:2) that two guests eating at the same table, one eating cheese and the other meat, should be careful not to drink from the same cup, because the food gets stuck to the cup. ...
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1answer
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Can you eat “congealed blood” meat?

I had read that when kosher meat slabs are delivered in a refrigerated truck, say, across the U.S., the meat must be hosed down every 2-3 days (I don't recall the exact time period) to prevent the ...
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1answer
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what’s better to have Unkashered or Trief liver

A “moral” dilema in the community has occurred which I would like advice on. A shop once sold nonkashered liver then went to sell only kashered liver now the Rabbi of the city has done a u turn to ...
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1answer
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A bug that falls in noodles [duplicate]

If a small non-poisonous bug jumps into a pot of noodles cooking, instantly dying because of the boiling water, and then is scooped out right away is there a problem with either the noodles or the ...
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1answer
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Are piranha and barracuda fish kosher?

Rabbi Presworsky's book describing the various kosher/non-kosher creatures seen here says that piranha and barracuda are kosher fish based on their scales. Are there any earlier poskim who have ...
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1answer
115 views

Waiting 3 hours to eat dairy after eating meat [duplicate]

Is it true that there is no true halachic time one must wait to eat dairy after eating meat for Ashkenazim? (Of course, eating it in the same meal is a sin, and is not allowed!) So by waiting 3 hours ...
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1answer
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Cheese cooked in meat pan?

If one cooks cheese (Grilled cheese) in a meat pan, does it make the cheese not kosher, and therefore a sin? List sources please.
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If One Considers Chabad to be Avodah Zarah What Kosher Products Should He Avoid?

If one were to consider Chabad to be a religion of Avodah Zarah because of their practices regarding the Rebbe as Mashiach, what otherwise marked "kosher" products should one avoid that are Chabad-...
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1answer
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Industrial kosher farming and shechita?

I understand that each animal slaughtered needs to be done with a special kind of knife and by a shochet. How might an industrial kosher farm operate without the need for an exorbitant amount of ...
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Why does my bottle of Kosher grape juice say that it's 'for sacramental purposes only'?

I recently noticed that the bottle of Kedem Kosher grape juice that I purchased has a notice on the label which reads 'FOR SACRAMENTAL PURPOSES ONLY'. I assume this means that it's being sold to be ...
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Why does Torah consider Bats as birds?

It seems from Re'eh 14:18 that Torah considers BATS as birds. Though scientists classify them as mammals. I'm preparing a class on this Parsha and would like to hear comments about this difference.