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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)

  • Rav Moshe Zt’l’s Heter of Cholov Stam Revisited

    Rabbi Avrohom Gordimer

    Halacha states that milk which is produced without hashgacha (r'iyah of a Yisroel) is non-kosher; such milk is termed "cholov akum". This rule is a gezeirah, lest milk from non-kosher animals be mixed into what otherwise could be assumed to be kosher milk. Milk is only permissible when a Yisroel watches the milking, verifying that milk from non-kosher animal species is not incorporated. (Yoreh Deah 115:1, from Maseches Avodah Zarah daf 35b)

  • Mesorah Fish

    On Sunday February 19th, the Orthodox Union presented a conference on awide variety of subjects pertaining to Mesorah of various “pareve” subjects. The following is a look at the topic I presented, “An Analysis of Kaskeses – Part and Present”.

  • An Analysis of Kaskeses – Past and Present

    Rabbi Chaim Goldberg

    To summarize, fish that have a kaskeses are kosher. The definition of kaskeses is unique to kashrus, and scientific classifications of scales are not halachikly determinative.

  • A Guide for Mitzvah-Keepers with Housekeepers

  • Kashrus and Allergens

    Rabbi Dovid Bistricer

  • Kosher Catering

    Rabbi Yermia Indich

  • Next Stop, Bombay! The Life of a Wandering Mashgiach

    Bayla Sheva Brenner

  • Hydroponics and Greenhouses

    Rabbi David Bistricer

    One of the greatest challenges in kashrus for Rabanim Hamachshirim today is protecting consumers from tolaim. One method that has become popular, especially in Eretz Yisroel, is to grow vegetables in greenhouses. Also known as glasshouses or hothouses, their objective is to provide a pest-free environment. Farmers working in conjunction with Rabbanim Hamachshirim have successfully perfected this method, which has proven to be an invaluable tool in the fight against tolaim in produce.

  • Kashruth Issues of Toothpaste

    Rabbi Dovid Bistricer

  • Styrofoam Cups and Aluminum Foil

    Rabbi David Bistricer

    Over the past several decades the kosher industry has grown considerably. Food companies recognizing the profitability of the kosher market have pursued kosher certification in an effort to increase marketability and sales of their products. What has been especially remarkable is that the pursuit of kosher certification has not stopped with food. It is not unusual to find nowadays a hechsher on non-food items. Are there really any viable kashrus concerns with something that is inedible? This article will focus on three popular household items, aluminum foil and pans, Styrofoam cups, and paper towels.

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