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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 ...


9

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 ...


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 ...


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


3

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 ...


3

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 ...


2

According to R' Moshe Heinemann, the Star-K's chief authority, the use such remote-control devices does not grant bishul Yisrael status, as it is not sufficiently direct: If the action that is done by the Yehudi (Jew) causes an indirect lighting of the oven, that action would not qualify for bishul Yisroel. Hence, dialing a number that in turn trips a ...


2

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 ...


1

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.


1

If a non-Jew cooks food of the type which is not normally eaten raw, then the food is forbidden for a Jew, and the utensils may not be used by a Jew until they are koshered. Many Ashkenazi (European) Jews are lenient that if a Jew lit the fire, then this law does not apply. Sephardic Jews (Spanish, North African or Oriental origin) are more strict, and for ...


1

See this other Mi Yodea Question which cites a source that municipal tap water could be used to fill up a mikvah. The reason for this is, pipes are not considered to be keilim. Normative practice has become to build mikvaot with many stringencies, but the basic fact that a pipe does not have a "beit kibel" (receptacle) and therefore, is not a kli, is ...



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