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

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Can an immersion heater be used to kasher a sink? Does anyone have experience with this?

Normally, to "kasher" or "kosherize" a metal sink (from non-kosher to kosher, or before Passover), you clean it out well, make sure it's used for nothing hot for 24 hours, then pour boiling water all ...
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2answers
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What's the halachic advantage of double (or triple) wrapping food?

I've heard of both double and triple wrapping when it comes to shielding a food item in an oven with regards to Kashrus. What exactly does double or triple wrapping accomplish that one wrapping ...
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1answer
154 views

How to prevent holes when double wrapping food?

When cooking milk in a meat oven (or kosher food in a treif one) I often find that when one wraps using aluminum foil, small holes appear (probably from the heat). I was wondering if anyone knows a ...
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2answers
71 views

Can someone swear off something that is already prohibited to them by halacha?

Can someone swear off something that is already prohibited to them? For instance: "I swear I won't eat non-kosher."
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3answers
212 views

What is the practical difference between nebelah and terefah?

The second mishna on Chullin 32a explains that if an animal is rendered invalid by any death which does not occur through proper ritual slaughter it is nebelah while if it is rendered invalid for some ...
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381 views

Halachic Considerations for Women in the IDF

For a religious girl going into the IDF very soon, there are a few questions that are often asked: Especially in active units, wearing a skirt while on base can be a problem: While crawling, ...
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3answers
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Why is chicken “meat” (with regards to basar bechalav) and an egg not?

Why is chicken considered meat but fish is not? Also, why is an egg considered pareve? And if we can eat chicken eggs, why can't we eat caviar (fish eggs)?
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4answers
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asking to see a kashrus certificate

A restaurant has a sign on its window, or a notation in an advertisement, indicating that it's under the kashrus certification of Rabbi So-and-so or Agency Such-and-such. The first time someone walks ...
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2answers
145 views

Does kashrut depend on peah, leket, etc?

I understand that if a crop in the Land of Israel does not have the trumot and maaserot properly separated, then the produce is tevel and cannot be eaten (until it is done). But that made me think of ...
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1answer
80 views

Is there an online source where you can check the standards of an Hashgacha?

I am looking for an online source where you can check the standards of any Hashgacha. (Cholov Yisroel, Glatt, Bait Yosef, Pas Yisroel, Mashgiach Temidi, vegetable checking, etc.)
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3answers
594 views

Keeping Kosher at a secular company

How you do deal with keeping Kosher while working at a secular company? Its easy enough to bring my own lunch everyday, what I'm not sure how to handle are events like company lunches and other social ...
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4answers
172 views

Comprehensive list of Kosher Products

Is there a comprehensive list on the web of all kosher products?
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907 views

Powdered Milk - Chalav Yisroel

I have a child with a milk allergy. He will be undergoing a "baked milk" food challenge shortly. For this I need to bake him muffins with powdered milk. I have found several brands of kosher powdered ...
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3answers
709 views

Can a female be a Shochet? (slaughter animals)

Can a female slaughter animals according to Halacha? (sources)
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3answers
212 views

Can Whole Fruits or Vegetables Have Non-Kosher Additives?

Many (perhaps all?) fruits and vegetables grown these days contain various "other stuff" such as pesticides and protective coatings. I suppose that fruits whose peels are removed do not pose a ...
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4answers
195 views

Waiting Less Time on Shavuos

My family has a minhag to wait less time (3 hours as opposed to 6) between Meat and Milk on Shavuos. I was wondering if this has a written source? [or if not, has anyone else heard of it?]
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6answers
531 views

Dairy that you have to wait 6 hours after eating it

Which dairy is considered sharp and requires you to wait 6 hours afterwards, prior to eating meat?
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1answer
176 views

Milk and Meat of Non-Kosher Animal Species

Is cooking milk with the meat of non-kosher animal species the same problem as cooking milk with the meat of kosher animal species? In other words: can a Jew cook milk with a non-kosher animal ...
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6answers
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Why is Soy milk considered Parve and not Milchig/Halavi?

Considering that milk is forbidden with chicken (as stated in this answer), because chicken could be confused with meat, why isn't soy milk considered milchig as well? In Israel, chicken is ...
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4answers
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Is a rare steak kosher?

If you have a steak medium to rare, such that it's still pink in the middle, is it kosher? At what point is meat cooked enough?
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1answer
184 views

Am I still Fleishig? When did we eat?

I'm sure this happens many times in a Jewish home on Shabbos: It's Shalosh Seudos time and there's dairy to eat, except no one remembers exactly what time the Shabbos meal took place. So, my question ...
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2answers
222 views

“Safe” Foods in Non-Mehadrin Situations

Given the fact that both Mehadrin and Non-Mehadrin exist, what are foods that can be safely eaten in non-mehadrin places? I.e. they would not be problemaic. (also, assuming Shemittah is not a ...
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3answers
261 views

Finding Meat After 6 Hours

Suppose you wait 6 hours (or more) and then realize you have a small piece of meat stuck in your teeth: Do you have to remove it before eating dairy? [assuming you have to remove it] Do you have to ...
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2answers
352 views

Orthodontics and period between eating fleischig and milchig

Since orthodontics often impose many artificial little crevices and wires and generally make one more susceptible to having bits of food stuck in the mouth for extended periods of time, is it ...
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1answer
222 views

How to increase the demand for kosher food?

I live in the Hartford Connecticut area and while the population of people who practice the Jewish faith is increasing, the ability to find Kosher food is on the decline. Even the local Kosher grocery ...
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1answer
275 views

Forms of Kashering a knife

I remember hearing that a knife can be kashered (from being treif) by sticking it in the ground. But I also know you can use the traditional kashering methods - Hag'ala and Libun. I have 2 ...
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4answers
573 views

Are Animal Crackers depicting non-kosher animals non-kosher?

Are animal crackers that depict animals such as swine, lions, and camels treif?
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1answer
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Permissibility of making Matzah by frying

Does anyone know of an opinion permitting Matzah to be cooked in a skillet(instead of being baked in an oven), and if so under what circumstances?
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Why isn't eating milk with chicken kosher?

I remember learning that the reason you don't eat milk with beef is because you shouldn't cook a calf in its mother's milk. However, when you are dealing with two different species, this same logic ...
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2answers
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Hagalah in Denver?

In high-altitude cities, water boils at a lower temperature than the standard 212 degrees Farenheit. For example, in Denver the boiling point is about 203 degrees. Can one kasher utensils with hagalah ...
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5answers
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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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1answer
131 views

Place Mats - Why and When?

When are placemats needed when eating, and why are they needed?
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399 views

Does cooking kitniyot in a pot render it non-kosher-for-Passover for Ashkenazic Jews? If so, why?

I've heard of cases where a Sephardic family, for whom rice is totally kosher for Passover (assuming it's checked and contains no additives etc.), cooked rice in a pot. The next day, they invite their ...
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2answers
268 views

Where is the story of the medieval rabbi who ruled a fish was non-kosher because of his dream?

If I recall correctly there's some fish whose kosher status is questionable; a medieval rabbi (Rishon) ruled it was okay, then had a dream that night where all his students were sitting around and ...
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4answers
333 views

When did kosher bakeries, restaurants, etc. start requiring supervision?

If my neighbor Shmerel keeps kosher and otherwise appears to be observant to the best of my knowledge, then I'd be allowed to eat in his house (assuming I'm invited), eid echad ne'eman b'issurin, his ...
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3answers
583 views

Kosher symbols on non-food items

I just bought a box of 100 sandwich bags and on the box there is an (U) symbol. This is neither unique nor uncommon. Why do marks of hechsher appear on non-food products? Is there anyone in the world ...
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1answer
230 views

Eating in someone's home who eats in non kosher restraurants

Can one eat at a friend's home who keeps a kosher home but eats at non kosher restraurants?
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1answer
124 views

Timing of the Commandment of Gid Hanashe

The Torah mentions, after the story of Yaakov getting injured in Parshas Vayishlach, that we do not eat the Gid Hanashe for this reason. The Meforshim seem to concur that this mitzvah was included in ...
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2answers
268 views

tuna wrap in non-kosher restaurant

Is there any way to eat a tuna wrap from a non-kosher restaurant, if I have full access to see their ingredients and packaging?
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3answers
441 views

Should one induce vomiting upon realizing s/he just ate non-kosher?

I've heard several stories of people who ate something, realized it was non-kosher, and therefore induced vomiting. Is this halachically required? Recommended? Does it accomplish anything? (If not, ...
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1answer
151 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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1answer
112 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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1answer
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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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1answer
80 views

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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3answers
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Is Rabbi Barnett Hasden's “Ner Tamid K” hechsher recommended?

Does anyone here know anything about the reliability of "Rabbi Barnett Hasden of Ner Tamid K in Staten Island, NY"?
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1answer
304 views

Can meat ever be both “treifa” AND “neveila”?

I'd always assumed that if a cow died of any cause other than proper shechita (kosher slaughter), the meat is neveila. If it died by kosher slaughter but had already been seriously injured or ...
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1answer
303 views

“Hospitality” Cereal Kosher?

It's a generic brand. I don't have access to the box and can't find any way to check…
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3answers
470 views

Is there anywhere that you can buy Kosher non Glatt meat?

When you go shopping, it seems that they only offer Glatt Kosher. I would imagine non Glatt would be cheaper. Is there anywhere that someone who is not Makpid (It is an American post world war ...
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2answers
562 views

Is Red Bull™ kosher?

Is the Red Bull™ energy drink kosher?
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702 views

What is the actual temperature of Yad Soledes?

What is the actual temperature of Yad Soledes?