The custom of avoiding Kitniyot during Pesach developed among Ashkenazi Jews, most famously codified by the Rama (Rabbi Moshe Isserles of Krakow, 16th century). The reason behind the custom was to avoid confusion between grains that can become chametz (like wheat, barley, etc.) and other legumes or seeds that were processed similarly or could get mixed together.
But not all legumes and seeds fall under this minhag—especially those not known in Europe at the time the custom emerged.
Here’s some clarification:
❌ Not Kitniyot (and permissible for those who do follow the custom):
- Soybeans – These were unknown in Europe until the 1700s, long after the Kitniyot custom was established. They weren’t used by the general population in Europe in the time of the Rama or earlier.
(See: History of Soybeans in Europe) - Corn (Maize) – Native to the Americas and introduced to Europe after Columbus (late 1400s). It became common much later and wasn’t included in the original minhag.
- Peanuts – Technically a legume, but not part of the Kitniyot category. They don’t resemble grains, aren’t processed similarly, and were also unknown in Europe during the origin of the minhag.
- Sesame seeds – Though sometimes avoided out of custom, they do not fit the definition of Kitniyot. They are not similar to chametz grains in appearance or use, and were not part of the original minhag.
You’ll often see items labeled “Kosher for Passover for those who eat soy/corn”, acknowledging that many today do not hold by the Kitniyot restriction.
✅ Kitniyot (for those who follow the minhag):
- Rice
- Lentils
- Beans (e.g., kidney beans, lima beans)
- Millet
- Mustard seeds
Our Approach
We at Kashrut.org view the Kitniyot custom as a stringency that was appropriate for its time—but no longer necessary today. The reasons for the original custom no longer apply, and the inclusion of many modern foods under the Kitniyot ban was never halachically required.
Anyone who chooses to discontinue the Kitniyot restriction is fully justified, and we support this approach.