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Why the world's best known brands choose the OU for Kosher certification

Kosher for Consumers

Useful articles and interesting information about Keeping Kosher and Kosher Supervision.

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    Category: Practical Kashruth

  • Are All Fromages Created Equal? Waiting Between Cheese and Meat

    Rabbi Avrohom Gordimer

    “You mean that I have to wait SIX HOURS after I eat cheese before I can eat meat??" Well, often yes. The Remo (Shulchan Aruch Yoreh Deah 89:2) states that the minhag is to wait after eating hard cheese before partaking of meat, just as one waits after meat before dairy; this minhag has become accepted practice for Ashkenazim. (See Chochmas Adam 40:13.)

  • Chametz She’avar Alav Ha-Pesach

    Rabbi Eli Gersten

    The general rule is that any chametz for which a Jew violated the Biblical prohibitions of Bal Yiraeh U’bal Yimatzei becomes forbidden forever as chametz she’avar alav ha-Pesach. This penalty applies whether the transgression was violated knowingly or unknowingly, and even if the Jew was completely unaware of the prohibitions of chametz or the Yom Tov of Pesach .

  • Aged Cheese List

    Rabbi Avraham Gordimer

    Here are some common cheeses and the lengths of time for which they are aged:

  • Shemittah For The Clueless

    Rabbi Mordechai Kuber

    “And the land shall rest” (Vayikra 25:1-7). Every seventh year, residents of the land of Israel are reminded that the land that flows with milk and honey is God’s property and domain. He grants the bounty of the six “regular” years and He commands that the land lie fallow during the seventh year, the shemittah year. During this period, landowners are required to relinquish ownership of their produce--whatever grows on their property must be made accessible to all. In this way, shemittah also serves as an antidote to greed and stinginess. Special halachot regarding the sanctity of the produce also prohibit their disposal as well as their profitable sale.

  • Microscope

    Rabbi Dovid Bistricer

    We live in a world of technological advancements. How we approach new inventions, medical procedures etc., and their impact on halacha can be highly complicated and very confusing. We have therefore been blessed from one generation to the next with Gedolei Yisroel whose broad shoulders have borne the responsibility to address these types of issues. This article will focus on a not-so-recent technological advancement, but one that nevertheless has been discussed quite extensively by poskim, the microscope.

  • Succos

    Rabbi Dovid Bisticer

    The connection between kashrus and Yom Tov is fairly apparent during Pesach. During this special holiday, chometz is strictly prohibited and we fulfill a very unique mitzvah of eating matzah. There are many intricate halachos associated with baking matzah, which if not performed properly, render one’s matzos to become chometz. There are also many halachos associated with the kashrus of wine used for daled kosos, the maror that we eat at the seder, and the list goes on. However, Pesach is not a holiday that has a monopoly on kashrus concepts. Areas of kashrus are also touched upon during other times of the year, even though sometimes the connection may seem hidden. Succos is no exception, as there are topics dealing with kashrus and eating, which are associated with this special time.

  • Tevilas Keilim; A Primer

    Rabbi Moshe Zywica

    In a world of proliferating products and differing kosher standards, one is frequently confronted with the awkward decision to accept or reject food or drink offered by a host(ess).

  • The Kashrus of Skinless Salmon

    Rabbis Yissachar Brody and Chaim Goldberg

  • What’s the Truth about…Kosher Soap?

    R. Ari Z. Zivotofsky, Ph.D. (with notes by R. H. Schachter)

    Misconception:There is no valid reason to use kosher soap. Fact:There is a solid halachic basis for using kosher soap exclusively.

  • Gluten Intolerance, Celiac, Allergies And Pesach

    Rabbi Avraham Juravel

    Pesach Kashrus professionals are familiar with the intricacies of ingredients and food production. Often, consumers who have health concerns contact kashrus agencies in order to obtain information about foods and ingredients. This is especially true when it comes to Pesach. Before Pesach, the consumer information lines at the major Kashrus agencies are constantly ringing. Many of these consumers ask question about Pesach and their health needs. This article will discuss some of the ways in which Pesach certified foods may impact on health issues. However, it is important to note that kashrus agencies and Rabbonim are not health specialists. Persons who need guidance with respect to health matters should obtain advice from qualified health specialists, not from kashrus agencies.

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