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Kosher in the Factory
Learn about how the 3,000 year-old laws of Kosher are applied to the most modern manufacturing facilities.

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Behind The Labels

By Rabbi Moshe Zywica
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Ice Cream and Other Frozen Desserts

By Rabbi Avraham Gordimer
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What’s The Truth About…Giraffe Meat!

By Rabbi Ari Z. Zivotofsky Ph.D. Misconception: Although the giraffe is a kosher animal, it is not slaughtered because it is not known where on the neck to perform the shechitah (ritual slaughter). Fact: The makom shechitah (region of the neck in which ritual slaughter is valid) on a giraffe is precisely defined by halachah, just as it is for all animals, and the only impediments to shechting giraffe are cost and practical considerations. (They are among the most difficult animals to restrain.)
oukosher.org

Say Cheese!

By Rabbi Avraham Gordimer An overview of the procedure for making Kosher cheese and answers to some of the frequently asked questions about Kosher cheese.
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What’s the Truth About…Glatt Kosher

By Rabbi Ari Z. Zivotofsky, Ph.D. Misconception : “Glatt Kosher” means something like “extra kosher” and applies to chicken and fish as well as meat. Fact: Glatt is Yiddish for smooth, and in the context of kashrut it means that the lungs of the animal were smooth, without any adhesions that could potentially prohibit the animal as a treifa, an issue only applicable to animals, not fowl or non-meat products.
oukosher.org

What’s the Truth about … Nikkur Achoraim?

By Rabbi Dr. Ari Z. Zivotofsky Misconception: Nikkur achoraim (rendering the hindquarters of an animal fit for kosher consumption) is a Sephardic practice that is banned by rabbinic fiat for Ashkenazim and thus not performed in the United States. Fact: There is no such ban, and nikkur was practiced in many Ashkenazic communities into the twentieth century. The practice of some communities to refrain from eating hindquarters, owing to the difficulty in excising the forbidden sections, continues to exist among both Ashkenazim and Sephardim.
oukosher.org

An Analysis of Kaskeses – past and present

By Rabbi Chaim Goldberg Consumers are becoming more health conscious. Fish is often considered a healthier option compared to meat. We are all familiar with certain fish like salmon and tuna. Yet, some may want to broaden their culinary experiences and try some more exotic varieties of fish. The question then becomes, what fish are kosher? This article will illustrate that it may not always be so simple to answer this question.
oukosher.org

An RFR’s Notes on Dettling Kirsch

By Rabbi Pinchas Padwa In Switzerland it is inconceivable to celebrate a joyous occasion without a glass of kirsch – cherry brandy. For tourists, it is compulsory to take home postcards of the Alps, a package of Swiss cheese and ... a bottle of kirsch [German for “cherry” ].
oukosher.org

The Hole Truth: Together, Bagels & the OU Have an Unbeatable Personality

By Rabbi Yisroel Bendelstein There is a definite connection between New Yorkers and the New York City bagel. New Yorkers are tough and firm on the outside but gentle and caring on the inside. A real New York City bagel too, is hard and crispy on the outside but moist and chewy on the inside. New Yorkers are shiny and flamboyant on the outside but good old down-to-earth and friendly on the inside. A real New York City bagel too, is burnished and slick on the outside but mushy and snug on the inside.
oukosher.org

Dairy English Muffins

By By Rabbi Dovid Cohen The OU certifies many brands of English Muffins which are labeled OU-D and many others that are OU-Pareve. In light of the issur to produce dairy bread (Shulchan Aruch 97:1), how can the OU certify muffins as dairy? The following two answers have been suggested to this question, and each is followed by Rav Schachter’s comments: Muffins have a unique shape.
oukosher.org

Kaskeses - Part Two

By Rabbi Chaim Goldberg In part one of this article, we discussed what the requirements are for fish to be kosher (i.e. that the fish needs to have “kaskeses” and what is a “kaskeses” ), as well as some of the common mistakes made in trying to determine which fish would qualify as kosher. In this article, we will discuss two practical methods to determine if a fish is kosher.
oukosher.org

OU’s Longtime RFR’s — Kashrut Supervision Legends in Their Own Time

By Bayla Sheva Brenner The Reasons behind a thriving organization’s success lie squarely at the doors of its trailblazers, the dedicated forefathers who laid the essential groundwork. In the booming OU Kashrut Division’s case, you could try knocking on the two Giants of Kashrut’s doors, but you probably won’t find them home; they’re on the road happily priming the next generation of experts.
oukosher.org

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