Global Orthodox Backing & Transparency

With approximately 3,000 kosher agencies worldwide—and more than 2,660 based in the United States alone—the certification market is vast and impossible to map entirely. Therefore, rather than trying to track every entity in the sector, the true priority for any manufacturer is knowing the origin, credibility, and strictness of the agency validating their products.

Global Kosher is an Orthodox Kosher certification agency operating with absolute transparency. We maintain a strategic institutional partnership with Kehilath Yaakov of the Pupa Community, an active constituent member of the renowned CRC of Borough Park (additional verification can be reviewed at kehalpupa.org).

Our global operations are guided by the counsel and blessing of our spiritual leader and chief advisor, the Grand Biala Ostrova Rebbe of Yerushalayim. For over 20 years, the Rebbe has provided spiritual and halachic guidance to the Dayan-Tank family, backing Global Kosher's mission to facilitate clean, natural products verified through rigorous auditing of raw materials and complex chemical components.

For this reason, and to ensure the most uncompromising level of purity demanded by the most stringent communities worldwide, Global Kosher exclusively certifies PARVE (neutral) products—ensuring they are entirely dairy-free and meat-free. Our focus goes far beyond standard food quality; we achieve an elite level of technical excellence that crosses over into high-compliance fields, specializing in the verification of:

• Pharmaceuticals, Vitamins, and Dietary Supplements
• Chemical-Grade Ingredients and Essential Raw Materials

To guarantee this security and combat international fraud, the globalkosher.org portal will soon launch its comprehensive digital verification platform, fully engineered and powered by MDLT Tech in Israel (Mizrahi Dayan Levy Tank Corporation). 

Today, we already deploy their advanced QR Code technology embedded into our official certifications. Developed under strict Israeli cybersecurity standards, this specialized infrastructure allows instant, real-time validation to confirm if a kosher certificate is active and authentic, completely eliminating the risk of seal falsification—a growing challenge faced by manufacturers across global supply chains.

The global expansion of Global Kosher is anchored by an elite rabbinical framework under the direct spiritual guidance of our mentor and chief advisor, the Grand Biala Ostrova Rebbe of Yerushalayim. Under his supreme halachic oversight, the Global Kosher Rabbinical Board certifies manufacturing plants worldwide, operating as an independent, unified international brand under the international administration of Rabbi Ovadiah Dayan Tank. To support our extensive field operations outside the United States, our administration works in close strategic coordination with Rabbi Yisroel Tauber (Director of the Bais Horuah Kehilath Yaakov). This robust structure bridges the traditions of leading Orthodox courts with a sophisticated, borderless corporate infrastructure—ensuring absolute purity and compliance for multinational manufacturers worldwide.

Meet the rabbinical leaders and halachic authorities behind our seal below:

The Spiritual Pillars of Our Kashrut: The Biala Ostrova Rebbe of Yerushalayim

At the absolute core of Global Kosher’s halachic integrity is our esteemed Rabbinical Advisor, the Grand Rabbi and Chief Rabbi of the Biala Chassidic Community in Jerusalem.

The holy lineage of the Biala dynasty traces back directly to the holy foundational masters of Hasidism—descending from The Holy Jew (The Yid Hakadosh), Grand Rabbi Yaakov Yitzchak Rabinowicz of Peshischa, and carrying forward the majestic spiritual heritage of Grand Rabbi Yehoshua of Ostrova. This continuous, unbroken golden chain (Shalshelet HaZahav) of Torah greatness ensures that the strict standards of righteousness and devotion to G-d guide everything we do.

From his holy court (Beis Medrash) in the heart of Jerusalem, the Rebbe serves as a beacon of profound wisdom, Torah scholarship, and spiritual guidance for thousands of Jews worldwide. Known for his deep warmth, sharp halachic insights, and unwavering dedication to the purity of Kashrut, the Rebbe oversees the spiritual path of Global Kosher.

His direct involvement as our Rabbi Advisor gives our certified companies a unique, unparalleled layer of spiritual prestige and universal acceptance within the highest, most stringent Orthodox communities worldwide.

Grand Rabbi of the Biala Ostrova Chassidic Community

• Title & Role: Chief Rabbi of the Biala Chassidic Community in Jerusalem & Chief Rabbinical Advisor for Global Kosher.
• Sacred Lineage: Direct descendant of The Yid Hakadosh of Peshischa and the holy Rebbes of the Biala-Ostrova dynasty.
• Spiritual Oversight: Provides elite halachic direction, ensuring our international certification processes align with the highest levels of Chassidische stringency (Chumrot).
• Global Impact: From his seat of Torah in Jerusalem, the Rebbe's oversight grants Global Kosher deep institutional weight, unlocking trust among the most rigorous consumers of kosher food across the globe.

Rabbi Shmuel Haber

• Spiritual Leadership: Rabbi of the Biala Ostrova Shtiebel in Aventura, Florida (USA) and trusted Secretary to the Grand Biala Ostrova Rebbe of Yerushalayim.
• Role at Global Kosher: Commercial Director for Latin America.
• Tenure: Serving the global kosher market with our agency since 2012.
• Expertise: Bridging elite spiritual oversight with international commerce. Rabbi Haber manages our commercial expansion and operations across Latin America, providing corporate clients with seamless access to high-standard Orthodox certification. His unique position ensures that our international operations remain directly aligned with the pristine halachic guidance of the Biala rabbinical court.

Rabbi Ovadiah Dayan Tank

• Community Leadership: Senior Rabbi at Kehilat Kodesh Ohel David in Deal, New Jersey.
• Corporate Role: Administrative Director for Global Kosher (Serving since 2012).
• Kashrut Industry Authority: Over 20 years of dedicated field operations and rabbinical oversight with the CRC (Central Rabbinical Congress).

Core Global Kosher Responsibilities:

• Director of the Chalav Yisroel Division: Manages the daily operational compliance and rabbinical audit of the specialized CRC Chalav Yisroel dairy farms throughout the State of New York.
• Food Science & Ingredient Compliance Lead: Directs Global Kosher's specialized chemical laboratories. He oversees the research, testing, and approval of modern food additives, complex raw materials, and new chemical ingredients to maintain the purity of the centralized Global Kosher International Database.
• Head of International Operations: Oversees Global Kosher’s overseas expansion and multi-branch infrastructure outside the United States, managing active corporate divisions in Brazil and Israel.

Rabbi Aaron Kurc

• Role: Commercial Representative Rabbi.
• Location: Israel Representative Office.
• Core Responsibilities: Serves as the primary point of contact for Global Kosher in Israel, driving commercial growth and managing relationships with manufacturers and corporate clients. He oversees local market representation, handles regional client onboarding, and acts as the vital strategic link between Israeli operations and the Global Kosher international framework

Rabbi Yisroel Tauber

• Institutional Role: Director of the Bais Horuah Kehilath Yaakov (Pupa Rabbinical Court).
• Strategic Partnership: Collaborates with Global Kosher to direct and scale all kosher operations outside the United States.
• Global Leadership: Working alongside Rabbi Ovadiah Dayan Tank, Rabbi Tauber utilizes Global Kosher as the premier international brand to certify, audit, and benchmark manufacturing plants worldwide under the highest standards of Orthodox Hasidic kashrut.