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

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Is pasteurization an adequate stand-in for something being mevushal?

I have a bottle of Lakewood Organic Concord Grape Juice. It is certified by Kof-K as pareve and kosher for passover. However, I cannot find anything on the bottle that would indicate it to be ...
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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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710 views

Kosher status of medicine that comes in a gel capsule

What are the kashruth issues involved in the taking of non-prescription gel-capsule medicine which does not have kosher certification?
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Contradictory Hechsherim

I've noticed for some time that, especially on imported foods, there are often multiple Hechsherim, and that they sometimes contradict one another. It might not surprise me if a foreign product were ...
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Shechting non-Kosher animals

The question was asked: If someone for example is sick and must eat from a non-kosher animal. Must it be shechted (slaughtered) first like a kosher animal? I don't see any reason why it should, since ...
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What forbids eating in a Jewish-owned restaurant open on shabbat?

Many restaurants in Israel, when asked about their kashrut status, reply that they are open on Shabbat. Thus, no hechsher. This also exists in establishments that would have a relatively easy time ...
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Can something be kashered by putting it in a cold pot then bringing it to a boil?

Normally the way a spoon would be kashered (in most circumstances) is taking a pot of boiling water, then dropping the spoon in. Instead, could I put a spoon in a pot of cold water, then bring the ...
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184 views

is it considered watching

Would milk be considered cholov yisroel if someone was watching via webcam
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The Sciatic Nerve and Fat of Kosher Fowl

I have learned that the sciatic nerve must be removed from land animals to render the meat kosher. But what about fowl? Does the sciatic nerve need to be removed from chicken or turkey? Why or why ...
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212 views

Can my non-Jewish co-worker bring me coffee from the corner cafe?

Assuming coffee is Kosher, would it be alright if my non-Jewish co-worker brings me coffee on a trip to the corner cafe? May I assume that the co-worker indeed purchased a Kosher item and has not ...
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331 views

Food cooked by a non-Jew not kosher?

Why is it that food cooked totally by a non-Jew - without the participation of a Jew - is not kosher?
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602 views

Eating your own (kosher) food in a non-kosher restaurant?

This was brought to mind by this question: What are the rules about joining your co-workers (or the like) for a meal in a non-kosher restaurant, but bringing your own food? Is it prohibited as mar'is ...
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Why don't kashrut agencies mark on certain cheeses that one must wait 6 hours?

While shopping for Shavu'ot, I noticed that the caterer had marked on their eggplant rollatini "made with 6-hour cheese". I was pleased that they did this, as I had never seen this marking, ...
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80 views

Can I use a Keurig coffee machine if someone else has used a non-kosher “pod”?

My office has a Keurig machine. They work by inserting small plastic cups, called "pods", that contain coffee or other items. As I understand the machine's mechanism, hot water drips through the pod ...
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37 views

Kashering a Hard to Clean Pot

Is it possible to kasher a pot that has areas that are hard to clean, for example the rim? Is there anything one can do to these areas if they can't be completely cleaned out that will allow the pot ...
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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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135 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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253 views

How can I avoid Bishul Akum with a rice-cooker?

ASSUMING: I have a rice cooker here that's absolutely, certainly, never used for anything other than plain rice. The rice contains no flavorings, bugs, or anything else non-kosher. Rice is raw ...
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Is kosher food cooked by an irreligious Jew Bishul Akum?

Assuming that one can ascertain that food cooked by an irreligious Jew is kosher, is the food still prohibited due to Bishul Akum? Does this also apply in a case of need, such as one visiting an ...
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How could boiling 3 eggs at a time help?

A lot of people have a custom of boiling 3 eggs at a time, as mentioned here, among any other places. One reason given for this practice is that if one egg turns out to be unkosher, the remaining two ...
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237 views

How far does Chaticha Naaseh Neveila go?

Someone cooked an article of food in his kitchen in 2000. In 2010, he discovered that it was treif Gamur. Between 2000 and 2010 he changed all his cutlary, plates, etc. so that nothing that he owns is ...
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365 views

Hot water tap at work

Many offices have a water dispenser (with hot water spout) or a hot water tap next to a sink. Is this hot tap Kosher? Assume for a moment that someone uses the tap to dispense hot water into a cup of ...
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Transfer of taste to/from non-food items

There are a number of heating pads on the market for heat therapy cures and general warmth in the winter. Some are electric, but some of them need to be heated in a microwave or an oven. If you heat ...
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Is the blood of a non-Kosher animal forbidden because of וכל דם לא תאכלו

Inspired by a recent chat discussion related to this question. Does the prohibition of וכל דם לא תאכלו - not eating blood - apply to non-Kosher animals? The Rambam writes: ודבר מפורש בתורה שאינו ...
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How long can יוצא ונכנס be?

In regards to kosher supervision, what is the largest single gap that a mashgiach can leave the premise and still be considered practicing יוצא ונכנס?
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Pouring honey into a hot beverage

Can pouring honey into a hot beverage, such as tea, create a Kashruth concern? In particular, if you pour honey into hot tea with milk, can you later use the same bottle of honey to add honey to a ...
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Opened “please-take!” food items in a non-Jewish workplace

Is it alright to consume unsupervised food items at work that are open and available to anyone, assuming the items were initially known to be Kosher1 and there's no evidence of tampering? Items that ...
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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, ...
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445 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 ...
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What was the first product to receive Kosher certification?

What was the first product to receive Kosher certification?
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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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360 views

Are there any national brands of tuna that are Bishul Yisroel?

Are there any national brands of tuna in the USA that are Bishul Yisroel?
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Am I allowed to enjoy the smell emanating from a non-kosher place that cooks using milk and meat mixture?

I know that one cannot gain "Hana'ah" from meat and dairy mixtures. I understood the term "hana'ah" to mean "pleasure" or "benefit". My neighbor makes wonderful-smelling Italian cooking. The smell ...
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The concept of glatt

Where in the Gemara do you find the concept of meat being "glatt"? Or where do you even find the concept of "kosher lmehadrin."
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How is it possible for a pot of meat to become pareve? [closed]

I was recently posed the following puzzle: You have a pot of meat. You put in milk. It becomes pareve. How can this be? Any ideas on how this is possible?
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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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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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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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Fins and Scales

I once heard that if a fish has fins it's enough - and you don't need to find out if it had scales. Is this true? What is the source? Why did the Torah write fins and scales, if fins is enough of an ...
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What is the point of a hechsher on Cholov Stam?

I assume that the widespread custom of eating/drinking Cholov Stam products (products using milk in which the milking was not observed by a Jew) is relying on the leniency of R' Moshe Feinstein that ...
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Hechserim on Matzos [closed]

There are matzos with circle U (O.U.) and matzos with circle K (O.K.). We want to keep high standards. Please tell us do these hechsherim have high standards? Does one of them have Higher standards? ...
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Do restaurants need a kosher certificate?

There is a concept of "Eid echad ne'eman b'issurin" which means if a person testifies on something that is questionable we believe him. An example would be regarding kosher: if I go to a friend's ...
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Easiest way to determine if something is “Chametz” or permitted for Passover?

A friend of mine runs a catering company that does do business with a sizable group of Jewish people. Around this time of year she gets requests to be 100% Passover Kosher of course. This often ...
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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 ...
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Is there a higher standard of kashrut for chicken analogous to “chalak beit yosef” for beef?

If I understand correctly, if someone wants to keep an extra-super-high standard of kashrut for themselves, s/he can look for "chalak beit yosef" beef, which means ("super-glatt") the lungs had ...
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Would silverware intended for one-time kosher use (e.g. airlines) need to be immersed in a mikva?

According to the Star-K, First Class and Business Class meals are double wrapped in real chinaware and sealed with kosher certification tape. They are then sent to the airline food service ...
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Children's Motrin and Advil

Recently it was publicized that certain lots of Children's Tylenol contain a non-kosher form of glycerin, and therefore should not be used in non-urgent situations. Does anyone have information about ...
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Difference between eiver min hachai for Jews and Noahides

Both Jews and Noahides are forbidden to eat aiver min hachai (a limb torn from a live animal). Is there any difference between the prohibitions for Jews and non-Jews?
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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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“Blias” in today's pots and pans

Throughout all of Yoreh Deah Chelek Alef and Hilchos Pesach (and perhaps other places in Shulchan Aruch as well) we see the idea of "blias" ("absorptions") by celim. That is to say there is a "taste" ...