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Questions tagged [kashering-kosherization]

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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 ...
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?
4
votes
2answers
297 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 ...
8
votes
1answer
338 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 ...
6
votes
1answer
623 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 ...
4
votes
3answers
287 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 ...
2
votes
2answers
422 views

Step-by-step Kashering: 'Iruy

What is the step by step method of Kashering for the method of 'Iruy? Assume I've never done it before, and I am taking a recently used, non-Kosher metal sink for Passover. (Maybe I'm in a hotel.) It ...
13
votes
2answers
603 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?
9
votes
2answers
12k views

Kashering a microwave

How can I kasher a microwave?
3
votes
1answer
253 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 ...
2
votes
1answer
118 views

Kasher a liver or unsalted meat

I understand that To prepare a liver to eat (not raw (maybe raw ok just to wash?)) and unsalted meat (without salting for 18min) We need to roust for the fire to remove its blood I understand that ...
0
votes
2answers
219 views

Grill used for neveilot

Assuming I have a grill and someone I know uses it, without my permission, to cook meat from a neveilah (or perhaps not, but kosher species without certification). What is the status of the grill and ...
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-...
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?
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?
4
votes
2answers
333 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
2answers
291 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 ...
1
vote
1answer
148 views

At what temperature is a food Boleya in the utensil

Say I have a pot that I used for beef soup. Then an hour later I forgot I used the pot for meat and I decide to make soup with cheese. I throw the cheese in it and put it on the fire. About 5 seconds ...
16
votes
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 ...
6
votes
1answer
229 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
1answer
181 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
326 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 ...
4
votes
1answer
148 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 ...
3
votes
1answer
905 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
0answers
68 views

Can an enamelled pan be changed from meat to milk/pareve? [duplicate]

I have a metal pan that is enameled white on the inside, which I have had for more than 40 years, and hardly used. I originally intended it for meat, but now I think I might get some use out of it if ...
2
votes
0answers
132 views

Kashering a stove

The common custom I have noticed is for people to use the same stove top for meat and dairy. However, people also claim you need to kasher a stove top before use. How are these two positions not ...
1
vote
0answers
42 views

Can Microwaves ever need Libun?

Very often microwaves have food splattered all over them. If the oven were to need to be Kashered would the spots that had food on them need Libun since they absorbed food directly (without a liquid ...
1
vote
1answer
734 views

What is the function of covering the stove top on Pesach?

It appears to be a universal Ashkenazi custom to cover the area of the stove top between the burners, underneath the grates with aluminum foil. (The grates and burners and cleaned and kashered.) ...
1
vote
1answer
105 views

Kashrut of second-hand silverware

Note: I've just emailed my rav to request a psak, this question is purely to explore the halachic background of the issue. Does second-hand silverware require both tevilah and kashering? If one is ...
1
vote
1answer
145 views

Sharpening a knife as Ne'itzah/Kelipah

Can sharpening a knife be done as a form of Ne'itzah for removing a Kelipah for Kashruth concerns?
0
votes
1answer
216 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, ...
0
votes
2answers
100 views

Kashruth of Terra Cotta

What are the halakhoth regarding unglazed terra cotta flower pots? Does it absorb? Can it be kashered, and if so, how? Sephardic rulings preferred, but will take any sources.
0
votes
0answers
45 views

Sharpening a knife as N"T [duplicate]

Is sharpening a knife a concern of Nothein Ta'am in Kashruth matters?