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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: Behind the Scenes (Theoretical Kashruth)

  • Behind The Labels

    Rabbi Moshe Zywica

  • Ice Cream and Other Frozen Desserts

    Rabbi Avraham Gordimer

  • What’s The Truth About…Giraffe Meat!

    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.)

  • Say Cheese!

    Rabbi Avraham Gordimer

    An overview of the procedure for making Kosher cheese and answers to some of the frequently asked questions about Kosher cheese.

  • What’s the Truth About…Glatt Kosher

    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.

  • What’s the Truth about … Nikkur Achoraim?

    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.

  • An Analysis of Kaskeses – past and present

    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.

  • An RFR’s Notes on Dettling Kirsch

    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” ].

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

    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.

  • Dairy English Muffins

    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.

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