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 ...
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 ...
Source: The Weekly Halacha Discussion
Per Igros Moshe Orach Chaim 2:68, and Shmiras Shabbos K'Hilchoso 31:1 a non Jew may open the fridge for you due to Psik Reishei.
Closing the fridge will cause the light to go off and is therefore prohibited. In a case where that it is a "Hefsed Meruba" large loss if the fridge remains open you are allowed to get a non ...
Shemiras Shabbos Kehilchoso (Edition published in 5770) Ch 10 (16) says that the food in the fridge is not forbidden to eat but you have to ask a shaaloh about closing the fridge. In note 48, he discusses the issues involved in closing the fridge.
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 ...
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
TL;DR: Consult your LOR.
The CRC's website has a convenient chart of items that need toiveling, and for those that can't be toiveled, what should be done. For example:
Coffee Maker - Glass parts - Tevilla. Machine - "clean well, do not use for 24 hours, and then run through one cycle"
(Note that the CRC includes this paragraph:)
Under no circumstances ...
"Your intention is to take out food, not turn on the light."
Unfortunately good intention only gets you so far. The Gemara says all agree you can't say "oh I just wanted to cut off the chicken's head because my kids like playing with chicken heads; my intention wasn't that the chicken should die!" (This argument is known as psik raisha, or "severed head").
Nitei Gavriel (Hilchot Yom Tov, volume 1, chapter 21, paragraph 4) says:
ד. מותר לשים ביו״ט קדירה של מים ע״ג האש כדי שיעברו על
שפת הקדירה ויכבו את האש מתחתיו, אכן יש לו להשתמש במים
לבישול קדירה וכדומה דהו״ל לצורך יו״ט, ודוקא במקום צורך כגון
שמפחד שהילדים יתקרבו להאש, אז מותר למלאות קדירה מים, כדי
להרתיח על האש לצורך שתיה, בכוונה שהמים ...
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 ...
In general, with any question about writing and erasing Hashem's name it is useful to check the halachos of writing and erasing on Shabbos, because there is a lot of overlap.
R' Moshe paskens that playing Scrabble on Shabbos is neither writing nor erasing, unless you're actually sticking them in their place like some deluxe sets. In that case he says one ...
See here where almost the exact same question is asked
Could the taste of milk become transferred from the grate or
stove top to a meat pot or vice versa?
In other words when I place my milk pot on the grate right after my meat
pot, does the milk pot absorb the taste of meat?
May I eat food that falls between the grates or on ...
Consult your local Orthodox rabbi.
But, to possibly point others in the direction of interesting answers, I have heard it argued that a microwave is considered akin to toledat ha-chama. See here and here.
In terms of cooking on Shabbat, there seems to be one understanding that it is merely a shinui (e.g. Rav Moshe Feinstein); and another understanding that ...
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 ...
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 ;)
The standard advice here is yes, just leave it on for the entire yomtov. Sorry, we're not magicians here that can hey presto improve on the wheel, so to speak.
If you really, really wanted to put it on a time switch (/grumble/), I suppose you could, though that would have your oven clock blinking all sorts of funny times throughout yomtov; you'd have to ...
#1 seems OK. The issues here are
the usage of timers.
There is no cooking problem for that which remains in the oven for 2 separate reasons:
The food is cooked and
The oven is off
If the food would be uncooked and the oven on, you would effectively raise the temperature when you close the oven door thereby cooking the uncooked food Rema ...
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 ...
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 ...
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 ...
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
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 ...
I don't have a source for this, but I have heard that in such a situation, it would be permissible to ask a child to hold the refrigerator door open so that the light would not be turned off on Shabbos. Naturally, it is expected that the child will eventually run away and the door will close. You still wouldn't be able to open the refrigerator again that ...
You wanted to know, why some people might be machmir on this:
Kashering a microwave for Pesach is impossible since only metal or wood can be kashered for Pesach. Although one can kasher plastic the rest of the year, one should not do so for Pesach. The inside of a microwave is generally not metal and is thus not kasherable.
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 ...
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
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.