by Ram ben Ze'ev
The Sages of Israel, in their unmatched wisdom, instituted many decrees to preserve the holiness of the Jewish nation and to prevent assimilation and spiritual decline. One such decree is the prohibition against eating food cooked by a non-Jew, known as בישול עכו"ם (bishul akum – cooking by a non-Jew). This rabbinic restriction remains in force to this day and is observed by Jews who are faithful to halakhah and to the separation of קדושה (kedushah – holiness) from חולין (cholin – the mundane).
The Foundations of the Prohibition
There are two primary reasons our Sages gave for this decree:
In the Holy Zohar, the preparation of food is viewed as a spiritually charged act. In Zohar Vayikra, it is taught that the food one consumes binds the soul either to purity or impurity, depending on the source and preparation. Eating food cooked in spiritual impurity taints the inner soul and obstructs one's connection with the Divine. This reinforces the idea that consuming food prepared outside the framework of Torah invites spiritual danger, even if the ingredients are technically kosher.
When Is It Permissible?
Though the decree is stringent, our Sages also clarified scenarios in which the prohibition of bishul akum does not apply:
Sephardi and Ashkenazi Differences
The two traditions—Sephardi and Ashkenazi—share the same halakhic foundation but differ in stringency regarding what constitutes Jewish participation in cooking.
Ashkenazi Position (Rama)
Ashkenazi Jews, following the rulings of the Rama (Rabbi Moshe Isserles), hold that it is sufficient for a Jew to light the fire. Once the flame is lit by a Jew—even if the actual cooking is done entirely by a non-Jew—the food is considered bishul Yisrael.
Sephardi Position (Maran – Shulchan Aruch)
Sephardi Jews, following Maran HaShulchan Aruch (Rabbi Yosef Karo), require that a Jew be actively involved in the cooking process, not merely lighting the flame. This could mean placing the pot on the flame, stirring the food, or adding ingredients while it cooks. Anything less may render the food prohibited.
In practice, this means a food item permitted in a kosher-certified Ashkenazi setting may not be permissible for a Sephardi Jew unless the more stringent standards of bishul Yisrael are met.
Inner Dimensions: A Reflection from the Tanya
In Iggeret HaKodesh, the Tanya teaches that the physical act of eating has spiritual consequences. The energy derived from food either elevates the soul or coarsens it. When food is prepared within the boundaries of Torah, it becomes a vessel for Divine service; when it is prepared in impurity, it pulls the soul downward into קליפת נוגה (kelipat nogah – the neutral shell that can be uplifted or fall into impurity).
Thus, even when the ingredients are kosher, if the preparation lacks sanctity and intention—or worse, carries spiritual contamination—it may bind the soul to impurity, severing its ability to feel closeness to the Divine.
Conclusion
The prohibition of bishul akum is not simply a dietary stringency; it is a spiritual safeguard. It reinforces the separateness of the Jewish people, protects against assimilation, and preserves the sanctity of what enters our bodies and souls. The halakhic boundaries—when understood properly—offer clarity and structure, allowing Jews to navigate modern culinary realities without compromising spiritual integrity.
As it is written in ויקרא (Vayikra – Leviticus) 20:26:
והייתם לי קדשים כי קדוש אני י־הוה ואבדיל אתכם מן העמים להיות לי
"And you shall be holy unto Me, for I, G-D, am holy, and I have separated you from the peoples, to be Mine."
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Bill White (Ram ben Ze'ev) is CEO of WireNews Limited, Mayside Partners Limited, MEADHANAN Agency, Kestrel Assets Limited, SpudsToGo Limited and Executive Director of Hebrew Synagogue