Orthodox Judaism/Kashrut


Dear Rabbi,
I was trying to explain, in general terms, how the koshering process works to a Gentile friend. I always thought that kosher food could not be harvested or produced on Sabbath. My friend pointed out to me how untenable this would be for large manufacturers. So, were my Fritos produced on Saturday? Were my vegetables plucked on the Sabbath? If the answer is that it's done for large quantities of people, likely more Gentiles than Jews, doesn't this undermine the entire process? Couldn't they just as easily say "that pork wasn't put in there for you Jews" either? Thanks in advance

Hi Ovadiah

Great question- one that many people don't stop to think about.

But, you have really hit the nail on the head. Fod cannot become "treif" by being produced on Shabbos. Yes, it may become forbidden to eat, but not because of Kashrut, rather because of the restrictions of Shabbos.

There are essentially three stages to consider:

1. A Jewish person cooks on Shabbos. That person may never eat that food. Another Jewish person may eat that food after Shabbos.

2. A non-Jewish person cooks for a Jewish person on Shabbos. No Jewish person may eat that food until enough time to have cooked it passes after Shabbos.

3. A non-Jewish person produces food for the anonymous public. A Jewish person may eat that food without hesitation.

Now, we do say that a Jewish person who desecrates Shabbos may not be trusted with regards to the kashrut of their kitchen (because they are clearly non-observant), but this does not mean that food produced on Shabbos is automatically non-kosher.

Kind regards,

Rabbi Shishler

Orthodox Judaism

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Rabbi Ari Shishler


I am a rabbi who loves teaching, through writing and speaking. In 1999, my wife and I started our own Chabad House and it's grown exponentially. I'm also the learning director at Chabad House of Johannesburg, a high school teacher and the father of young children. As you can imagine, I get to answer lots of questions every day. I'd be glad to answer your questions on Judaism, Jewish spirituality and practice.


I have been a practicing Orthodox rabbi since 1997 and have headed my own community since 1999. I teach Talmud at a religious high school in Johannesburg and give daily lectures to adults on Jewish practice, spiritualty, Chassidic philosophy and Kabbalah. I'm the campus rabbi at our two major universities in Johannesburg.

Chabad-Lubavitch South African Rabbinical Association.

Monthly column in Jewish Life magazine, South Africa. Jewish Tradition, South Africa. Jewish Report, South Africa. South African Union of Jewish Students annual Holiday guide. Jewish Observer, South Africa. Nshei Chabad Newsletter, NY. Jewish Online Magazine. www.chabad.org

After completing high scool, I spent six years studying in Rabbinical seminaries in South Africa, Israel and New York.

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