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Questions tagged [cooking-bishul]

for questions about cooking generally and also about the halachic concept of bishul

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18 votes
2 answers
2k views

Starbucks VIA on shabbat

Someone recently mentioned in a conversation about making/ not making tea on shabbat with a tea bag, that the Starbucks VIA coffee is micro-ground vs how ever regular instant coffee is made and that ...
MEG's user avatar
  • 731
15 votes
3 answers
4k views

Brewing fresh coffee for Shabbos with a time clock

May one prepare coffee ingredients in a brewer such as this one on Friday and set the timer to brew the coffee for 8:00 Shabbos morning?
Gershon Gold's user avatar
15 votes
2 answers
2k views

Why does a Meat Thermometer not need Tevilla?

In this answer, We were told that "according to the Star-K Tevila Guidelines, no tevila is required for a meat thermometer." Why not? From the Star-K's article on Tevillat Kelim: Utensils ...
Menachem's user avatar
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15 votes
3 answers
1k views

Ben Drosai - what was his Zechus?

Gemara Shabbos 20a and in other locations mentions כמאכל בן דרוסאי Rashi explains that Ben Drosai was a thief who ate his food when it was only cooked 1/3. Did Ben Drosai have some sort of Zechus ...
Gershon Gold's user avatar
14 votes
2 answers
4k views

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 can't?...
yydl's user avatar
  • 38.6k
14 votes
3 answers
4k views

Gentile living with a Jewish flatmate

I've been talking with someone about possibly moving in to a room in her house later in the year. Her kitchen is kosher and her house is shomer Shabbos, but since I'm used to spending Shabbos in ...
Annelise's user avatar
  • 2,010
13 votes
2 answers
1k views

Cooking water on Shabas renders the pot non-kosher?

The halacha (SA OC 318) generally is that if someone cooks food b'mezid (on purpose) on Shabas then he may not eat it, not even after Shabas. Magen Avraham adds that the pot in which the food was ...
msh210's user avatar
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12 votes
1 answer
1k views

Where does the notion that the *entire* matza process must be done in under 18 minutes come from?

I've been going over the halakhoth for baking matzah, and even though I hear from almost every Rabbi I've asked that the entire process must be done in under 18 minutes, I can't find any evidence for ...
Aaron's user avatar
  • 11.3k
12 votes
3 answers
2k views

Sous-vide cooking for Shabbat

Sous-vide is a method of cooking food slowly, at a precisely-controlled temperature. This article in the New York Times reports that this method is becoming more and more accessible to and widespread ...
Isaac Moses's user avatar
  • 48.2k
11 votes
2 answers
322 views

Cooking meat and milk as a chef

In this article an Orthodox woman describes how her rav permitted her to enroll in culinary school. Although he apparently did not permit cooking meat and milk together, is there any angle to permit ...
yitznewton's user avatar
  • 3,403
11 votes
2 answers
543 views

Kosherizing Water using Distillation

Suppose I have water that was cooked with non-kosher food. I then take the water and distill it. Would this water be considered permissible to drink?
yydl's user avatar
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11 votes
3 answers
5k views

What rules need to be followed in order for a non-Jewish professional chef to cook Kosher food for a Jewish customer?

I'm a non-Jewish professional chef in a restaurant, and I am marginally aware of kosher dietary restrictions. I know that the food itself, as well as the pots, pans, and other utensils used in ...
Wad Cheber's user avatar
  • 2,100
11 votes
1 answer
972 views

How was kosher cheese made before artificial rennet?

I understood that cheese is made by throwing in Stomach hide into milk and letting it congeal. How was kosher cheese made (where one's not allowed to mix milk and meat)? Now we use chemicals or ...
user avatar
11 votes
2 answers
591 views

Blackout restoration on Shabbath - and your food

If you suffer from a blackout on Shabbath, but the power returns on Shabbath, and you have certain food elements cooking, is there a problem of either Nolad or some other issue relating to food that ...
Seth J's user avatar
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11 votes
2 answers
2k views

Using an oven timer on Shabbas

This is my first post here. I'm fairly familiar with cooking on Shabbat, but I have a few specific questions. I know there are issues with using the warming setting on an oven to keep food warm. ...
PinteleYid's user avatar
11 votes
2 answers
5k views

Using a plata on Shabbat

I have a plata--an electric warming tray that does not have knobs or adjustments. I can leave it plugged in throughout Shabbat. I want to use it correctly when I have guests and to up my observance. ...
Larry K's user avatar
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11 votes
1 answer
1k views

Double Wrapping on Pesach

I have always understood that one may use a non-kosher microwave for kosher food by double (or triple) wrapping the said food while cooking it. May one use the same procedure for cooking on Pesach in ...
yydl's user avatar
  • 38.6k
11 votes
2 answers
592 views

Which types of light bulbs are 'only' an issur d'rabbanan to activate on Shabbat

I'd be very interested to know if anyone has definitive advice on which types of light bulbs are considered an issur d'rabbanan (Rabbinic prohibition) vs an issur d'oraita (Torah prohibition) to turn ...
user2503's user avatar
  • 111
10 votes
4 answers
2k views

Non-Yemenites who heat up soup after the start of Shabbat?

The most widely held practice regarding heating up liquids on Shabbat is that it is prohibited, though there are differences of practice between Ashkenazim and Sephardim regarding sauces and such (...
ChaimKut's user avatar
  • 2,473
10 votes
2 answers
283 views

Allowed to help prepare / serve "milk and meat" meal in homeless shelter?

Imagine a case in which one is invited to volunteer with a group that is preparing and serving a meal at a homeless shelter. The group has decided on a menu that includes milk and meat together in ...
Desert Star's user avatar
  • 3,403
10 votes
3 answers
377 views

Meat Flavor during the nine days

I cook hard boiled eggs with shells in meat cholent and was wondering if I could eat them during the nine days. If cooked before Rosh Chodesh Av or after - would that make a difference?
ADK's user avatar
  • 101
10 votes
1 answer
602 views

May one reheat food on top of a crock-pot or urn on Shabbos?

According to my understanding cooked or baked food that is currently cold, may be placed on top of a pot that is on a blech on Shabbos to warm up. What about putting cooked or baked foods on top of ...
yydl's user avatar
  • 38.6k
10 votes
2 answers
3k views

Can one use timer to turn on platta on shabbos morning?

As in title, can one use a timer to turn on hot platta (hot plate) on Shabbos morning to heat up the food? (If one doesn't want to have platta ON for the whole night due to safety reasons.) I use a ...
user avatar
10 votes
3 answers
5k views

Why do some people have a custom to boil only odd numbers of eggs?

I heard that some still have a custom to boil only odd numbers of eggs at a time. I heard that the reason is if there is a blood-spot in an egg, the egg will be Battel Berov. This only explains why ...
ertert3terte's user avatar
  • 40.6k
10 votes
2 answers
503 views

Can one bake silkworms in a kosher oven?

Raising silkworms can be a fun project. If you're trying to get silk thread, the last step of the process, after they finish spinning their cocoon, is to bake them in the oven to kill them (if they ...
Welz's user avatar
  • 205
9 votes
3 answers
2k views

"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" ...
Yehoshua's user avatar
  • 16.1k
9 votes
1 answer
676 views

What is פנאד"ש?

I know that it is a meat food, but what does it look like? (שולחן ערוך יורה דעה צד, 8) I didn't find any explanations about it from Google.
Ishayahu's user avatar
  • 337
9 votes
3 answers
164 views

Are בישול on Shabbos and בישול of Meat and milk the same?

Are the qualifications for being called בישול (cooking) the same for Shabbos (e.g., frying is a question in Halacha if it is recognized as Cooking to say אין בישול אחר בישול - there is no such thing ...
Chalutzhanal's user avatar
  • 2,292
9 votes
1 answer
12k views

Baking powder on Pesach

I know intellectually that chemical leavening agents are allowed during Pesach. Kosher baking powder (free from kitinyot) is widely available. Still, I can't help feeling that it's cheating to use ...
Ernest Friedman-Hill's user avatar
9 votes
2 answers
996 views

Minimum Halachic Definition of Bread

This is sort of the counter question to Mezonos bread. At what point does a grain based admixture transition between bread and non bread? To clarify: The general position of Sephardic Jewry is that ...
Isaac Kotlicky's user avatar
8 votes
3 answers
6k views

Cooking Cholent Right before Shabbos

Is there anything wrong with putting up a cholent to cook right before Shabbos?
SimchasTorah's user avatar
  • 33.3k
8 votes
3 answers
2k views

Coffee Urns on Shabbos

I've heard that there is a dispute among halachic decisors if one is allowed to use an urn like the one shown below on Shabbos because the outside water tube gets cold over Shabbos but then gets ...
ertert3terte's user avatar
  • 40.6k
8 votes
4 answers
3k views

Do you have to check boiled eggs?

Is it necessary to check hard or soft boiled eggs for blood spots? I've never seen anyone do it, so perhaps it is not, but if so, why?
HodofHod's user avatar
  • 21.1k
8 votes
1 answer
338 views

Tevilas Keilim for a meat thermometer

Does a meat thermometer need to undergo tevillas keilim before use, since it does not really do anything to prepare the food itself?
Dave's user avatar
  • 21.1k
8 votes
2 answers
916 views

Issues with cooking meat and milk at the same time

What issues are there (either potential or inherent) in cooking meat dishes and milk dishes at the same time on the same stovetop (not in the same pot)? Please also compare benefits and problems ...
Seth J's user avatar
  • 41.7k
8 votes
2 answers
1k views

Can I use a Parabolic Mirror or Fresnel Lens to cook on Shabbat?

Shabbat 39a discusses cooking on Shabbat using the sun. It is permitted to roll an egg on a hot roof to cook it since this is not a typical way to cook, but you can't burry it in sun-heated-sand ...
zaq's user avatar
  • 9,038
8 votes
1 answer
412 views

Can steam make one Fleishigs?

If I go and lean my head over a pot on the stove, open my mouth wide, allow the steam that's rising to enter my mouth, and then swallow it (don't try this at home), does that give me a status of being ...
yydl's user avatar
  • 38.6k
8 votes
2 answers
660 views

May one host irreligious guests on yom tov?

Although it is permissible to cook on Yom Tov, this heter is limited to cooking for other Jews. Because of this prohibition, Chazal were concerned that if one had non Jews as guests, he would cook ...
Ish Ploni ViKohen's user avatar
8 votes
1 answer
939 views

Is checking for bugs halachically required?

Various methods of checking for bugs in produce, i.e., lettuce, are officially recommended by kashrus agencies and other halachic professionals. However, is use of one/any of these methods--or even a ...
SAH's user avatar
  • 20k
8 votes
1 answer
2k views

Does eating a parev item cooked in an oven with meat make you meaty?

If I cook (e.g.) roasted vegetables in an oven whilst at the same time cooking a chicken in a different shelf, would eating the roasted vegetables render me meaty? There are several factors that need ...
bondonk's user avatar
  • 10.4k
8 votes
1 answer
2k views

Where does the concept of a Kli Shlishi come from?

When it comes to cooking on Shabbos, most people hold that things that are not allowed to be put in a Kli Sheni (a vessel once removed from the vessel that was on the fire) because it is considered ...
Menachem's user avatar
  • 44.7k
8 votes
1 answer
122 views

Cooking meat on Shabbat using Kinetic energy, or non-conventional ways

Putting all jokes (and Purim Torah) aside, a person successfully demonstrated cooking both steak and chicken using a machine that slaps the meat continuously (video here). Albeit they claimed it ...
Moshe's user avatar
  • 3,729
8 votes
0 answers
150 views

Is Sous-vide Cooking or Roasting?

It has been discussed here previously regarding the Sous-vide method of cooking. However I have a separate question. What type of method is halachically categorized as? Is it Tzli or is it Bishul? ...
Shoel U'Meishiv's user avatar
7 votes
2 answers
786 views

Cooking nat-bar-nat food in an opposite-type pot

The Star-K writes: If one ate pareve food that was cooked in a fleishig [=meat] pot, one is not required to wait six hours before eating dairy. However, one may not eat this food together with ...
msh210's user avatar
  • 73.4k
7 votes
1 answer
110 views

Food cooked on Shabbas for Pikuach Nefesh

What is the status of the leftover food cooked for a person who was critically ill on Shabbas? Halachicly one is allowed to cook food on Shabbas and eat it if their life is in jeopardy. However, let'...
sam's user avatar
  • 42.3k
7 votes
2 answers
223 views

Do you take challah from something that will be deep fried?

If the requisite amount of dough is made that would require taking challah if it were baked in the oven, should one take off challah with a bracha if she intends to deep fry the dough instead?
user avatar
7 votes
3 answers
1k views

Tasting the meaty Shabbos food on erev Shabbos Chazon: can one swallow?

We do not eat meat or poultry in the Nine Days with certain exceptions notably Shabbos. It is customary to taste the Shabbos cooking on erev Shabbos afternoon to check the flavouring. During the nine ...
Avrohom Yitzchok's user avatar
7 votes
2 answers
1k views

Is a dud shemesh allowed to be used on Shabbat?

Can a solar-powered water heater (a dud shemesh [דוד שמש] in Hebrew) be used on Shabbat? These are quite common in Israel as a way of heating water without electricity on a sunny day. Essentially, ...
Scimonster's user avatar
  • 23.2k
7 votes
1 answer
292 views

Cole slaw in the Cholent on Shabbos

In a discussion I overheard, I seem to understand that there is a Halachic Issue of mixing Coleslaw into the Cholent in my plate on Shabbos. I also heard, but it may be a separate topic, that the ...
simchastorah's user avatar
  • 9,069
7 votes
2 answers
338 views

What are some general halachot about treif culinary schools?

I have seen some assorted questions about specific occurrences in a non-kosher culinary schools here, however, I was wondering if there are any general halachot which apply. In other words, would it ...
Noach MiFrankfurt's user avatar

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