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Why the world's best known brands choose the OU for Kosher certification
Learn about Kosher
Welcome to our guide through Kosher.
The Kosher Primer introduces the basics, answering the main questions of how, what, and why.
If you are seeking to make your own home kosher or have a kosher question in your own kitchen, see Kosher in the Kitchen.
Delve into the world of industrial Kosher in Kosher in the Factory.
Have more questions? Try out FAQs. If you don’t find your answers there, email the Webbe Rebbe for quick personal answers from OU headquarters in New York City.
Kashruth Professionals or other interested parties should see Daf ha-Kashruth, the OU monthly newsletter. For a detailed and deeper understanding of specific kashruth issues, one can consult Mesorah, a publication in Hebrew that is also dedicated to presenting the teachings of Rabbi Yoseph Dov Soloveitchik, zt”l.
