14
votes
Where does the notion that the *entire* matza process must be done in under 18 minutes come from?
This does not include the time in the oven, but the notion that the entire process until the dough goes into the oven must be completed within 18 minutes is based on actual opinions on the books.
I ...
- 47.4k
11
votes
Accepted
Brewing fresh coffee for Shabbos with a time clock
The Sefer Yerushas Pleita (Siman 16) brings from a sefer called Matta Yerushalayim that quotes in the name of the Chasam Sofer that it was common for people to set up a fire on Erev Shabbos in a way ...
- 15.3k
11
votes
Accepted
What is פנאד"ש?
I have found in the article (p. 8 of the PDF) of Eliezer Papo that it is
מאכל ספרדי דומה לבורקס שלנו היום – כיסנים ממולאים בבשר או בגבינה.
a Sephardic food similar to our bourekas today – dumplings ...
- 7,272
8
votes
Accepted
Ben Drosai - what was his Zechus?
The Yerushalmi in question is in Avodah Zarah 4:4.
Prof. Shamma Friedman has written about the historical Ben D'rsai (who based on the Yerushalmi was not a Jew).
According to this article, Rashi ...
- 246
8
votes
Accepted
Food cooked on Shabbas for Pikuach Nefesh
Short answer:
If a Jew cooked the food, then yes, it may be eaten.
If a non-Jew cooked the food it's a debate amongst the Poskim.
Sources:
The Kitzur Shulchan in 92:9 סימן צב - דין חולה שיש בו ...
- 42.5k
7
votes
Accepted
Sous-vide cooking for Shabbat
In a shiur you can listen to here Rabbi Aryeh Lebowitz discussed some of the issues involved with sous vide which is begun before shabbos. They are:
Shehiyah.
Leaving foods on a heat source.
Garuf ...
- 33k
7
votes
Brewing fresh coffee for Shabbos with a time clock
In Rabbi Eider's Halachos of Shabbos page 322 footnote 657, he quotes a list of Rabbis who say this is assur. In order of his quoting them:
Rav Y. Henkin in Euros Yisroel page 122.
Tzitz Eliezer ...
- 33k
7
votes
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How to reconcile a wife's cooking with the Zohar's definition of husband and wife?
Yevamos 63a:
אשכחיה רבי יוסי לאליהו א"ל כתיב אעשה לו עזר במה אשה עוזרתו לאדם א"ל אדם מביא חיטין חיטין כוסס פשתן פשתן לובש לא נמצאת מאירה עיניו ומעמידתו על רגליו
Rebbi Yosi found Eliyahu. He ...
- 57.9k
6
votes
Accepted
Is a dud shemesh allowed to be used on Shabbat?
All sources are from Yeshiva.org.il's detailed article about this. Note that i am relying on them being correct -- i did not check them.
As we said in the question, there are two possible issues:
...
- 22.9k
6
votes
What is liquid (prohibited from reheating on Shabbat)?
I asked this exact question to Rabbi Shlomo Mordechai Breslauer, rav of Bais Tefilo in Monsey, NY.
He told me to put the substance on a surface that is not slippery (e.g. a paper plate), and hold it ...
- 6,596
5
votes
Accepted
How long does entire process of baking matzo take to be kosher?
The Gemara in Pesachim 46a (brought in the Rambam Laws of Chametz 5:13 and the Shulchan Arukh OC 459:2) says that if one leaves dough for the length of time that it takes to walk 1 "mil" (a Talmudic ...
- 96.3k
5
votes
What rules need to be followed in order for a non-Jewish professional chef to cook Kosher food for a Jewish customer?
There are a few interesting points to address here. I am not going to go into a long discussion on all of the halachot of kashrut here because those can be found in depth around this site and ...
- 24.5k
5
votes
Is artificial sweetener (Splenda, Stevia) pre-cooked? (Making Coffee on Shabbat)
Partial answer:
OU rules that Splenda is pre-cooked. However it recommends using a kli sheni, not a kli rishon.
- 69.6k
5
votes
Gas Pilot on Yom Tov
Google is your friend! The COR, Chabad, the OU, and the Star-K say you can light a burner from a pilot light on yom tov.
- 73.6k
5
votes
Accepted
Explain why the "kli sheini" rule works regarding Shabbat cooking
No need to worry about this being a bad question. Its Tosfos's question!
ושמע מינה כלי שני אינו מבשל - תימה מאי שנא כלי שני מכלי ראשון דאי יד סולדת אפי' כלי שני נמי ואי אין יד סולדת אפילו כלי ראשון ...
- 5,335
4
votes
Coffee Urns on Shabbos
Rav Yechiel Perr told me that that after speaking to scientists he concluded that to use such an urn is not a problem as the water in the tube has already exchanged from the water inside.
The sefer ...
- 15.3k
4
votes
Accepted
Why does a Meat Thermometer not need Tevilla?
The OU writes
The general rule is that any utensil, made from metal or glass, which touches the food and is used for preparing, serving, or eating the food requires tevilah. Though a can opener and ...
- 5,335
4
votes
What are some general halachot about treif culinary schools?
[I thought about that question as it became even more relevant with the advent of cooking TV shows where a Jew might be involved in cooking non-kosher foods with no intent to eat it or serve it to ...
- 44.7k
4
votes
cooking for shabbat in a campfire
You need to be aware of the halochos of hatmono (=insulating food), see below extracted from dinonline. I suggest you read the whole article and then CYLOR.
There are two ways of insulating food:
...
- 46.6k
4
votes
Why can't we have challah in the oven with other food?
According to the OUKosher.org website if the Challa is completely wrapped up one may bake other items in the same oven. This is based on Shach (Yoreh Deah 108:1) who quotes from the Issur V’heter that ...
- 138k
4
votes
Accepted
Leftovers and Chillul Shabbat
If you have made a neder to use this particular food only on shabbat, then you would have to keep the neder. However, if you have set it aside for shabbat, then you have only determined that you will ...
- 42.7k
4
votes
Can one cook meat and fish dishes at the same time in the same oven?
Many halachic decisors permit cooking meat and fish dishes simultaneously provided at least one of them is covered (SA YD 108:1). After the fact, it is permitted to eat the food even if not covered (...
- 44.7k
4
votes
Accepted
May one marinate fish on Shabbat?
The Mishna Berura in 321:5 (21) states that one may not salt raw fish or meat; whether to eat it on that Shabbat or to prevent it from spoiling.
He says that it's a Rabbinic decree as it looks like ...
- 42.5k
4
votes
Accepted
If one accidentally reheats some soup on Shabbos, are they allowed to eat it?
There is a machlokes as to whether you can purposely do this or not. Most poskim say you can't but R' Ovadya Yosef allows it. See here
While one mustn’t place a davar lach, a boiled food with liquid ...
- 6,115
4
votes
Accepted
Should we prevent a chumra in the laws of Shabbos that exceeds the normal understanding?
R. Eliezer of Metz in Yereim 274 writes explicitly that one should not put any food in a keli sheni nor in a keli shelishi (if they are at the temperature of yad soledet bo) as we do not know which ...
- 40.4k
4
votes
Tradition soup on shabbos
This exact type of instant noodle soup is addressed by Rabbi Yoni Levin here
Ultimately, there are two potential pitfalls that making such soup on Shabbos would present:
Bishul - cooking
Makeh B'...
- 25.4k
3
votes
Water heaters on shabbos and yom tov
I received the following answer from the Star-K but it doesn't include detailed sources:
The way this system works is that, when you open a faucet, hot water
exits the tank. Cold water enters ...
- 5,114
3
votes
Automated Cooking Machine Programmed
There appears to be a difference of opinion between contemporary authorities regarding whether and how a Jew's triggering the cooking process using some indirect electronic means grants the resulting ...
- 47.4k
3
votes
Double Wrapping on Pesach
The Mishna Brura (247:1 sv. 13) And Shulchan Aruch HaRav (O.C. 247:10) both permit covering as a way of avoiding the issue of smell, which is one of the issues that the double covering is designed to ...
- 31.7k
3
votes
Is it permissible to use a French Press on Yom Tov?
Of course CYLOR, but the short answer is yes.
The longer answer is look in Hilchos Yom Tov siman 510 siff two and three with the Mishna Berurah and Biur Halacha.
Basically any Borer you can't do ...
- 33k
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