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Questions tagged [kashering-kosherization]

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16
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2answers
218 views

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 ...
13
votes
2answers
611 views

Why does one need to kasher burners on a stove for passover?

I don't use separate burners for milk and meat during the year, nor do I think there's any reason to do that. So why the need to kasher burners before passover?
12
votes
1answer
1k views

Knife sharpening - can it be done anywhere?

Can you take a Challa knife to any knife sharpener or would you have to Kasher it after it is sharpened? Would there be a difference if it is a meat or cheese knife?
11
votes
3answers
321 views

Trustworthiness of “new” dishes

When one buys new dishes from a store (e.g. cutlery, plates, bowls), is there any concern that they are not as "new" as they are claimed to be? For example, someone buys some cutlery and plates, ...
10
votes
1answer
2k views

Koshering granite

I have been told that a granite counter top is similar to glass in that it is not porous and does not absorb taste from food that touches it. Is there a source in halacha for this concept? What other ...
9
votes
3answers
4k views

Kashering pot from meat to dairy/parev?

I know I've learned somewhere that you can't kasher a meaty pot for use with dairy (except for Pesach), but I can't find a source for it now. Can anyone provide a source? (The sauce would be a light ...
9
votes
2answers
12k views

Kashering a microwave

How can I kasher a microwave?
8
votes
2answers
2k views

plastic utensil absorption and kashering

Does a plastic utensil swallow up taste and excrete it out like metal,or is it like glass. Also can plastic be kashered if it became treif? What are the sources that discuss this?
8
votes
1answer
351 views

Can rags and oven mits become non-kosher or be kashered?

If kitchen rags or cloth oven mits have been used in a non-kosher kitchen, may they be used in a kosher kitchen after they are laundered? Or do they become non-kosher (for example, from contact with a ...
7
votes
2answers
632 views

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 ...
7
votes
3answers
4k views

Using Dishwashers for both Meat and Milk

Can one use a dishwasher to wash both meat and dairy dishes, either simultaneously or consecutively? What about pareve dishes?
7
votes
1answer
126 views

How does one do Hagalah above 12,000 feet?

How does one do Hagalah above 12,000 feet, where water's boiling point falls below 190°F? Under normal circumstances, the water will not be Rochsim, and therefore unsuitable for Hagalah. Using a ...
7
votes
2answers
290 views

How to salt a chicken at home?

I'm Sara Gittel from the Shtetl and I just got back to my home with my freshly shechted chicken that I had brought to our local Shochet. I seem to have forgotten though how to salt it. Can please you ...
6
votes
2answers
1k views

Can you kasher earthenware or porcelain utensils?

I read in the Kitzur Shulchan Aruch of the Yalkut Yosef that if one cooked dairy in a earthenware meat vessel, and if the vessel is valuable, then one can perform hagalah on the vessel three times ...
6
votes
1answer
785 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 (completely submerging the ...
6
votes
1answer
85 views

What is the halacha regarding recooking livers?

Years ago, I would buy a box of raw chicken livers and roast them myself. On the box, there was a note that said that once roasted, it could not be recooked. Recently, I found already roasted livers ...
6
votes
1answer
639 views

Microwave on Pesach

A friend told me that his family will kasher his microwave in general (ie if non-kosher food was heated up in it) but will not kasher it for Pesach, letting it lie dormant instead. Does anyone have a ...
6
votes
1answer
231 views

Kashering non-Kosher meat + “minimizing a transgression”

Halacha has a strong tradition of "minimizing a transgression" when doing something forbidden, for example taking the shortest route possible when driving on the Sabbath. Applying the same logic, ...
5
votes
3answers
336 views

Do you have to re-tovel non-Pesach dishware after buying it back?

"Utensils which are bought from a non-Jew, even if they are brand new, require immersion in a kosher mikveh." --From Weekly Halacha: Selected Halachos Related to Parshas Vayera by Rabbi Doniel ...
5
votes
2answers
377 views

Kashering and tevilas of corkscrews

Do they need to be Kashered? Toiveled? If yes to #1, how? One potential issue with not kashering a corkscrew is that it could have had contact with non-kosher wine. I'm not sure whether it would ...
5
votes
1answer
188 views

Dishes were used without tevilat keilim; can one just do tevila now or is something else needed?

If dishes have only ever been used for kosher food but they were not toveled (immersed), what steps must be taken per halacha to be able to continue using them? Can one just take them to the mikvah ...
5
votes
3answers
2k views

Kashering with a potted plant

On Friday, my grandmother made a comment about kashering a knife by sticking it in a potted plant (with very loose soil), something which will not kasher anything. What is the origin of this bubbe-...
5
votes
1answer
1k views

Can one “pickle” meat to make it kosher?

Most of the meat koshering processes that I have read say that one should salt the meat and put it on a board to let the blood drain out. Then, you rinse off the salt. I'm wondering if the salting ...
5
votes
1answer
129 views

May non-kasherable items be put into kosher service if they arrived new-in-box?

I understand that glass and ceramic are not kasherable but they still are by far the most convenient and least expensive materials for dishes and cups. If these vessels were purchased new-in-box, it ...
5
votes
1answer
490 views

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 not?...
5
votes
1answer
101 views

Is one allowed to ask another to kasher his items that may get damaged when kashered?

There is a halacha which prohibits one to kasher items which may get damaged when kashered (as there is a concern that one may not kasher his item well). Are you allowed to ask someone else to kasher ...
5
votes
3answers
536 views

Toasters in motels / cabins

Some motels / cabins provide toasters - the "retro" 2-slice toaster that projects the hot toast into the air when its done (and, perhaps sounds a bell, too, if it still works!) The toaster is clean (...
5
votes
1answer
79 views

What is the status of water used for Kashering?

If one kashers a pot by boiling water in it (and throwing rocks in so it overflows) or kashers silverware IN a pot, what is the status of the water afterwards? [I see that water can acquire some ...
4
votes
2answers
298 views

Order for tevilah and kashering

This is an extension of this question. If one purchases used keilim from a non-Jew which would require both tevilah and kashering, which order is prescribed: tevilah then kashering or kashering then ...
4
votes
3answers
130 views

Cholov Israel microwave

If someone is careful about only eating dairy which is Cholov Israel, is it OK to use a microwave which has been used for Cholov stam, without doing anything to kasher the microwave or wrapping the ...
4
votes
2answers
155 views

Prior to placing the meat on the altar in the Temple, was it “kashered”?

Perhaps, I may be overlooking something trivial, here. Store-bought meat is salted and soaked to drain the blood, prior to it being packaged and sold to the consumer. Was something like this done in ...
4
votes
2answers
301 views

Step-by-step Kashering: Hag'alah

What is the step by step process of Kashering for the method of Hag'alah? Assume I've never done it before, and I am taking a recently used, non-Kosher metal pot and a number of cutlery and cooking ...
4
votes
1answer
242 views

How is Hagalah done on glass?

With regards to using glass vessels on Pesach that were used year round, The Shulchan Aruch HaRav (Orach Chaim 451:63) says that, for Ashkenazim, if the glass vessel was used multiple times during the ...
4
votes
2answers
345 views

Does a kosher pot become non-kosher after you kasher utensils in it?

I'm kashering a number of non-kosher, metal utensil with a kosher pot. If heat is a mechanism through which things can become non-kosher, does kashering my utensils in the pot (via Hagalah) make my ...
4
votes
1answer
103 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 ...
4
votes
1answer
86 views

Why does age of a water filter affect how to kasher it?

The Star-K Web site says about water filters: If they are metal and have been on [the faucet] consistently since the previous Pesach, they should be left on during kashering of the spigot [for ...
4
votes
1answer
142 views

Why does smashing an earthenware vessel resolve the problem of the absorbed material of a cooked offering which has gone beyond its time limit?

Vayikro 6:21 An earthenware vessel in which it is cooked shall be broken, but if it is cooked in a copper vessel, it shall be purged and rinsed with water. Rashi explains, “[An ...
4
votes
3answers
296 views

How many degrees of separation from food does one have to kasher?

I understand that the sink, the dishwasher, and sponges, etc. all need to be kashered, presumably because they touch things (plates, utensils) that also touch food. But how many degrees of separate ...
4
votes
1answer
1k views

Can an induction hob be kashered on Pesach?

Induction cooking involves an alternating magnetic field in a coil underneath a smooth glass/pyrex surface. This alternating field induces eddy currents in an iron pot placed on the hob. In turn, ...
4
votes
1answer
151 views

Do I need to kasher the grill I used to kasher my liver?

I was looking at meat at the local butcher-shop and noticed that the packaged liver (un-kashered) mentioned that it could be cooked on a grill. However, I have always heard that liver needs its own ...
4
votes
0answers
54 views

Knife Becoming Unusable By Threatening Someone With It

I have heard that if a knife is used (even for pretend) to threaten someone it is treif to use unless Neitza is done to it (being stabbed in the ground 10 times). Does anybody know of a source for ...
4
votes
1answer
279 views

If I left my kitchen under the control of someone who is a Gentile or not Shomer Shabbos, is it still kosher?

If I left my kitchen (or set of kosher dishes, etc.) with someone who is a) not Jewish or b) Jewish but not shomer Shabbos--in such a way that they could access it and hypothetically do anything they ...
3
votes
1answer
915 views

Kashering glass plates

We bought from eBay glass fish-shaped plates, manufactured by Arocroc (France) in 1970 or so. The listing had "unused" in the description but that is not certified. How does one kasher glass plates?
3
votes
2answers
237 views

Cholov Yisroel “Kashered”

So I was eating one of my favorite meals -- a bunch of peanut butter and cheese sandwiches, and to pass the time, I looked at the package of cheese. It is "Natural and Kosher" by Anderson ...
3
votes
1answer
182 views

Possibility of buying treyf meat in a kosher store

Since meat may be sold to a consumer before kashering and traiboring, it is possible that parts of meat obtained from a kosher store may not be kosher.* Ordinarily, one could guess whether the meat ...
3
votes
1answer
67 views

Is there a minhag or halacha to avoid kashering vessels for Passover and to only use new vessels

I was told by my father that we follow the minhag not to kasher vessels for paisach but to buy new ones I asked a Rav, the Rav said there is no such minhag, no reason to avoid kashering even when ...
3
votes
1answer
196 views

How do you kasher your teeth?

A Pesach preparation guide tells me to kasher my teeth on Erev Pesach. How on earth does one do this?
3
votes
2answers
297 views

Why do you have to kasher kitchen counters for Pesach?

If you don't use your countertops for either kli rishon or sheine, why do some require them to be kashered for Pesach?
3
votes
1answer
255 views

Step-by-step Kashering: Libbun

What is the step by step process of Kashering for the method of Libbun? Assume I've never done it before, and I am taking a recently used, non-Kosher oven and stove, as well as a frying pan, for ...
3
votes
1answer
211 views

In kashering, can you leave utensils eino ben yomo *before* cleaning?

As I understand, the first step in kashering a kitchen is to thoroughly clean everything and then leave it untouched for 24 hours (eino ben yomo). Would it be technically permissible to clean the ...