Is It Kosher? Yes, Oreos sold in the United States are kosher. Every standard variety carries OU-D certification from the Orthodox Union, meaning they are certified kosher dairy. Outside the US the answer gets more complicated, and this guide walks through exactly what to check on the package.
Guides Kosher means food that meets the requirements of Jewish dietary law, known as kashrut. It covers which animals may be eaten, how meat and dairy are kept separate, and how products are supervised. This guide walks you through the basics in plain English.