10

The OU uses a system where they remotely light an oven in order for the product to be Bishul Yisrael. From the OU website Rabbi Yehuda Shain has recently developed an ingenious system whereby the mashgiach can monitor the production from an off-site location. By installing a special device, it is possible to turn the oven on and off through the use ...


10

From Rabbi Dovid Ribiat's The 39 Melochos (p. 378): a) Aerosol spray cans ... The Igros Moshe permits the use of aerosol cans on Shabbos because the scattering is not caused directly by blowing or wind-force, but rather by the pressure of the liquid as it is forced through the microconduits in the nozzle head. Since the scattering is not directly caused by ...


9

It depends on the freezer, but one approach is to just unscrew the light bulb if you can reach it. That's what my family has always done. You can leave it loosely hanging in the socket if you want to put it back in for during the week, though unless it's in a dark basement it's probably easier to just leave it out all the time. This only works with basic ...


7

Unlike typical food certification, there is nothing exceptionally special about the Star-K certification of appliances. They look at the specifications and functions, and apply their Poskim's understanding of the application of Halacha. The non-certified one can be shown to any Rabbi competent in that area and he can decide if the mode has any issues you ...


7

According to the OU - it may be used after they are cleaned and rinsed off. Q. The lunch area in our office has a can opener, peeler, bread-toaster (not a toaster oven), flatware, coffee mugs, glass dishes and glass cups available for anyone to use. Can I use them? A. The can opener and peeler can be used after they are cleaned or rinsed off.


6

So the issue is two fold: Do the contents of the pod forbid equipment, and does the process of brewing the coffee create an issue. I have spoken with a Rabbi who is active in Kosher certification about this issue in the past. He was machmir about it (especially in my context where the hot chocolate wouldn't be Cholov Yisroel, so there was no question of the ...


6

Only one refrigerator is needed in any Kosher kitchen. Meat and Dairy can be stored in the same refrigerator. See also here.


5

Practically speaking, no food is ever placed directly on the oven rack save for bread to be warmed or toasted. As such one can rely on Rabbi Moshe Feinstein who says in his Igros Moshe Yoreh Deah 3 siman 24 that toasters don't need tevila being that you are not cooking or preparing the bread, but rather just drying it. And while its true that this drying is ...


5

Mishna Avoda Zara 4:10 (פרק ד - משנה י): גּוֹי שֶׁנִּמְצָא עוֹמֵד בְּצַד הַבּוֹר שֶׁל יַיִן, אִם יֶשׁ לוֹ עָלָיו מִלְוָה, אָסוּר . אֵין לוֹ עָלָיו מִלְוָה, מֻתָּר . נָפַל לַבּוֹר וְעָלָה, וּמְדָדוֹ בַקָּנֶה, הִתִּיז אֶת הַצִּרְעָה בַקָּנֶה אוֹ שֶׁהָיָה מְטַפֵּחַ עַל פִּי חָבִית מְרֻתַּחַת, בְּכָל אֵלּוּ הָיָה מַעֲשֶׂה, וְאָמְרוּ יִמָּכֵר Bartenura: ...


4

From investigating AGA ovens, in theory there is no problem in kashering them. In practice it's gonna be quite complex. They have a ton of areas, and they are massive with a lot of thermal mass. In order to kasher them, you have to heat them up quite hot, but because of the thermal mass it's going to take a huge amount of energy and a very large flame. It ...


4

As a child, when my parents would buy a sandwich maker or something of the sorts, we would give the ownership to our Non-Jewish friend and use it in our house. Our friend always gave us permission to use it ;)


4

See Shabbos Kehalacha (vol. 2 12:39-42). Borer is not a problem if you don't want either thing but just want to separate them in order to dispose of them properly. (For example separating recycling from other garbage, papers for geniza from papers for garbage, Shemita fruit peels from other fruit peels to throw out). Similarly here were you don't want either ...


4

An important development on this topic. The Star-K used to say Keurig machines in a work environment were ok to use, but they have revised. "There was a time when a Keurig machine dispensed only coffee. Currently, however, soups containing non-kosher meat can also be dispensed. Therefore, an office Keurig machine may not be used unless one can ascertain ...


4

It would seem to be problematic based on information from sites such as this http://www.quora.com/How-do-Flavia-machines-work It seems a pipe or needle is poked into each packet to inject the hot water. If that is in fact the case, then that pipe will absorb the flavors from the nonkosher items, either through contact or steam. After which it will mix in ...


4

This is from the crcweb questions to Rav Belsky: Remote Lighting & Timers Submitted by: Rabbi Eli Gersten Some factories are located in remote areas and it is difficult for Mashgichim to visit frequently or on short notice. If such a factory requires bishul Yisroel, it may be impossible to send a Mashgiach every time the boiler ...


4

Probably the issue is hashmaat kol (leaving a noisy device running on shabbos that is considered a profanation of it's sanctity). - https://www.naaleh.com/hashmaat-kol-noise-on-shabbat-v5n9


4

If your freezer is anything like mine it doesn't have an actual bulb. One way round this is to use a powerful magnet which cuts the circuit without harming the freezer in anyway. The Federation Beis Din in London have a dedicated technology site to deal with various home appliances and the halachic pitfalls that sometime follow on Shabbos. Try taking a look ...


4

I use velcro tape. If you dry the area on both sides of the switch, you can get the tape with the hooks or loops to stick. Then, every week before Shabbos it's just a matter of attaching the other piece across. There are items manufactured specifically for this which are sold in most judaica stores. I would suggest only using 3M brand, not the junk you can ...


3

A comment from dmi_ provided a kashrut certificate from the London Beit Din (expires December 2016) that certifies many of the Flavia drinks, including the dairy ones excluded in the (presumably-older) link in the question. The certificate doesn't explicitly mention the machine and this answer brings up mixing via the steam from prior uses. I contacted ...


3

See here The Mishna (Brachos 9:2) writes that one recites a bracha upon hearing good news, building a new house or buying new items. The Shulchan Aruch (OC 223:6) and Mishna Berura (223:13) explain that this only applies to items that are important and one is particularly happy about acquiring. This applies equally to used items (Shulchan Aruch OC 223:3). ...


3

I asked this question a couple of years ago to my LOR and was told that I should clean the surface as well as possible (two rounds of EZ OFF will do) and I should then cover the surface with aluminum foil.


3

http://www.ok.org/Content.asp?ID=115 The Sink: Separate sinks for washing dishes and preparing foods are recommended. If the two sinks are adjoining, there should be an effective separation between them so that no water or food splashes from one sink to the other. If there is only one sink, it may be used after it has been completely cleaned, ...


3

I checked with my LOR tonight about the tea urn and he said that while it would be good if no chametz has touched it during the year (and it was kept away from where there is chametz), it would be better to have a different urn for Pesach. The main reason is that it is quite easy for chametz to have gotten on the urn sometime during the year. I asked my LOR ...


3

According to the 2014 OU Jewish Action Passover Guide on page 14 under "Libun (Burning)" On Line THE KASHERING PRIMER – PASSOVER 2014 A self-clean cycle of an oven(approx 850 degrees F) also qualifies as libun I have done it but it can also mess up some utensils. I was also been given this advice by the Baltitimore star-k, when I called the office.


3

R Yitzchok Yaakov Fuchs (in his book Hakashrut, p. 665) writes Baking ovens and toaster ovens that were used for meat and dairy foods and even for prohibited foods may be used to bake or warm up kosher food on the condition that the food placed inside is wrapped hermetically in two wrappings. In any event only kosher baking tins or disposable ...


3

I too emailed the LBD a few months ago and never got around to updating here (apologies for the delay on my part). I asked specifically about using the machine after it has been used with a non-certified flavor. They said: The Flavia drink machines are designed in such a way that the water pours straight into the sachet and from there, straight into the ...


3

Regarding the issue of hashmaas kol, see Darkei Moshe (Orach Chaim 252, 7) who quotes a number of Rishonim who understood that hashmaas kol is prohibited only if the sound will cause people to suspect you did something prohibited on Shabbat, like if they hear the flour grinder churning they will suspect you are operating it on Shabbat (even though you set it ...


3

See answer to this related question regarding the kashrut of Sodastream for Pesach. According to OU, it is permissible for Pesach use. (I can't qualify it further as my web browser is blocking me from viewing the OU site, now. If someone wishes to edit my question to include what OU says, please do so.) Sodastream recommends using a new bottle or one ...


3

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 avoid. So it would seem that according to those sources, yes, double covering would work.


2

Rabbi Dovid Ribiat ("The 39 Melochos" mleches makeh bpatish p. תתלב fn. 104) cites differing opinions as to whether making seltzer qualifies as the forbidden melocho of makeh b'patish (according to the Yerushalmi that includes food items in the prohibition). He cites the Shemiras Shabbas K'hilchasa (11:35) who is lenient. He doesn't explicitly mention why ...


Only top voted, non community-wiki answers of a minimum length are eligible