An In-Depth Explanation of the Kosher Certification Process

>Get Kosher Certified
What is certified kosher? STAR-K Kosher Food Certification is a guarantee that food products and ingredients meet all kosher requirements. This kosher certificate also authorizes the manufacturer to display the STAR-K emblem on the product to advertise its kosher status.

The procedure for acquiring kosher certification is relatively simple. Upon receipt of your application, a representative of STAR-K will evaluate your company’s ingredients and products. Then a contract will be drafted, detailing all the requirements and obligations of both parties. All kosher requirements, as well as a list of all your ingredients and products, will be enumerated. Furthermore, the contract will outline the correct emblem authorized for each product indicating each product’s Kosher status. A signed contract guarantees that regular visits will be made periodically by a Rabbinic field representative of the STAR-K. The purpose of the Rabbi’s visit is […]

Taking the Mystery Out of the Certification Process

Star-K Kosher Certification is a guarantee that food products and ingredients meet all kosher requirements. The Star-K symbol has worldwide recognition and acceptability, with its certified Star-K products being sold around the globe. Certification authorizes the manufacturer to place the Star-K emblem on the product packaging to demonstrate its kosher status.

We believe that it is worthwhile to take time to study the different services offered by the many different certifying agencies. Making the right choice, an informed choice because you have asked the right questions, is one of the most important factors in determining whether or not your company receives maximum benefit from kosher certification. We suggest that you take a few moments to read “How to Choose A Kosher Certification,” which will provide you with helpful hints regarding questions you should be asking.

1. No Obligation Application
The procedure for […]

Guideline of the Certification Process

Application requesting kosher certification submitted*


STAR-K contacts applicant to begin the review process*


Applicant provides a list of all ingredients and names of suppliers*


STAR-K reviews data and estimated fees*


STAR-K makes an initial inspection which includes a thorough review of all ingredients, all plant equipment, and manufacturing processes


STAR-K submits a contract proposal outlining all agreed upon terms for kosher certification


After all terms and issues have been satisfied, STAR-K issues a letter of certification, authorizing use of the STAR-K symbol on the products approved

*These are […]

Kosher in Depth


The Jewish religion incorporates within its tenets a regimen of dietary laws. These laws determine which foods are acceptable and conform to the Jewish Code. The word kosher is an adaptation of the Hebrew word meaning “fit” or “proper.” It refers to foodstuffs that meet the dietary requirements of Jewish Law. Market studies repeatedly indicate that even the non-Jewish consumer, when given the choice, will express a distinct preference for kosher certified products. They regard the kosher symbol as a sign of quality.The barometer of Kosher and non-Kosher depends on two variables: the source of the ingredients and the status of the production equipment. Kosher certification, which is the guarantee that the food meets kosher […]

Kosher in Brief: What Is Kosher?

The tenets of kashrus (kosher dietary laws) are rooted in the Written and Oral Torah (the Bible). In the post-Biblical era, the rabbis elaborated upon these laws with explanations, details, and organization. These laws determine which foods are acceptable and conform to the Jewish Code.

The word kosher is an adaptation of the Hebrew word meaning “fit” or “proper.” It refers to foodstuffs that meet the dietary requirements of Jewish Law.

The barometer of kosher and non-kosher depends on two variables: the source of the ingredients and the status of the production equipment. Kosher certification, which is the guarantee that the food meets kosher requirements, revolves around these two criteria.

A common misconception is that kosher reflects the conferring of a blessing on food by a rabbi. There is no truth to this whatsoever. Although Jewish ritual does require the recitation of a blessing prior […]

The Mitzvah of Shatnes

This article is an attempt to provide a review of some of the pertinent details of the mitzvah of shatnes, to educate consumers so that they avoid purchasing garments containing shatnes, and to dispel many of the myths about certain types of clothing and textiles that do or do not contain shatnes. We hope to reduce the all too frequent instances in which the joy one naturally experiences upon purchasing a new garment is diminished when shatnes is discovered.

Pruzbul

Updated August 2022

View / Download PDF of Pruzbul Form Here

Jewish law obligates every Jewish person to cancel, after the culmination of the Shemita year, various types of debt due to him or her. This does not apply to a debt owed to beis din.

If a creditor executes a Pruzbul, he or she is not obligated to cancel debts. A Pruzbul may be executed at any time before the end of the Shemita year.  However, since a Pruzbul covers only debts already existing at the time of its execution, it is usually implemented at the very end of the Shemita year, shortly before Rosh Hashana of the post-Shemita year.

When a creditor arranges for the execution of the Pruzbul form below before three men acting as a Beis Din, debts […]

Mitzvos on the Fringe

Just as the Torah carefully directs us in the arena of kosher diet, what we can and cannot eat, how food may and may not be prepared, and what foods are considered required eating, similarly, the Torah provides us with a kosher dress code regarding the clothing we wear, what fabrics or combination thereof may or may not be used, how clothing should or should not be worn, and what styles of clothing are recommended. One of the Torah‘s great “how to” mitzvos is the mitzvah of tzitzis. The Torah instructs us to insert specially wound fringes onto the corners of any four cornered garments where the corners surround the wearer.

Good Fences Make Good Home Owners

by Dr. Tzvi White, reviewed by Rabbi Moshe Heinemann, Star-K Rabbinic Administrator

Home ownership, the American dream. After moving in one hopes it doesn’t turn in to an American nightmare. So many things to take care of; so many things to consider. Utilities, the structure, the appliances – the list is seemingly endless. Dealing with normal home issues is hard enough, just think how many more issues have to be considered in a kosher compliant home. Kosher mezuzas on all entrances. Kosher appliances to make the kosher kitchen user friendly. No trees hanging over the backyard area where the sukkah is to be built. Moreover, does anyone realize that roofs, porches, balconies and landings have to be kosher as well? How do you make a porch kosher compliant? The answer – build a ma’akeh.

What is a ma’akeh?

[...] Read More

When You Need to Knead: A Guide to Hafrashas Challah

Fall 2004 | Updated May 2025

[For a related article about the halachos of hafrashas challah for gluten-free blends, whole wheat flour, sourdough and at challah bakes, click here.]

One of the many ways Klal Yisroel serves the Ribbono Shel Olam is through the performance of mitzvos hateluyos ba’aretz, mitzvos that are dependent on the Land of Israel. Those who live in Israel have many opportunities to fulfill these mitzvos. In chutz la’aretz, the mitzvah of hafrashas challah is one of the only agricultural mitzvos that we are obligated to perform.1

It is well known that this is one of the mitzvos performed preferentially by women. Furthermore, one honors the Shabbos by baking and being mafrish challah on Erev Shabbos.2

The following are halachic guidelines based on the psak of Rabbi Moshe Heinemann shlit”a.3

A. Products

Products kneaded from chameishes minei dagan (wheat, spelt, barley, oats, and rye) are obligated […]

Pas or Pas Nisht: Reviewing the Laws of Pas Akum

Life is made up of a long chain of experiences. Some bitter, some sweet, some mundane, and some exciting. Let me share one with you. About ten years ago I had the good fortune to have an inspiring experience in Morocco, of all places. The purpose of my trip was to inspect various Star-K companies that exported olives and olive oil to the U.S. The inspiration came as a result of spending two days with the remnant of the once thriving ancient Jewish community of Meknes. Meknes was home to many Rabbanim, Geonim, and Tzadikim. The Ohr Hachaim HaKodosh, the great luminary who wrote the famous commentary on Chumash, was born in Meknes. The Jewish cemetery dates back 1200 years. Today barely two hundred families remain. The Rav of the small kehilla is a holy Jew by the name of Rabbi Chaim Kasous, who had served […]

Pas Habah B’Kisnin: Pas or Pas Nisht

Spring 2005 | Updated August 2013

…Sora spent the whole morning shopping and was ready to stop for lunch. She was in luck. The kosher pizza shop was down the block from the mall. Since she was watching her weight she did not want to indulge, so she ordered one slice, salad and a diet soda. As she carried her order to her seat, she was faced with a dilemma: which brocha (blessing) should she make – mezonos or hamotzi?

…It was a beautiful wedding with a magnificent stand up smorgasbord. Naturally, the guests lined the carving tables to indulge in delicious corned beef. The glatt[...] Read More

Me’ein Olam Habah, Instant Style: Instant Foods in the Kosher Home

August 2013

(Click here for a helpful Glossary of Terms used in this article.)

Our fast paced lifestyles have opened a market for easy to prepare and pre-cooked types of foods. Ready to eat, heat-and-serve or just add boiling water. Packaging labels proclaim that you can have that old fashioned home cooked flavor in only a fraction of the time. For the kosher consumer there are a variety of concerns that present themselves when using these quick to prepare concoctions. As can be expected, the less you have to do at home to prepare, the more that has been done at the factory to make the food edible. Therefore, one must be sure that the product has reliable kosher certification.

One must also be cautious as well when using these processed foods on Shabbos. As a rule, when dealing with raw foods, the Shabbos […]

HOT OFF THE HOTLINE: Kosher is Healthier

“Do you really know what Kosher means?”
“I think so.”
“Fine, so tell me, what is Kosher?”
“Kosher means that the food is clean and healthy.”
“No, Kosher means that the food production was blessed by a Rabbi.”

FOOD FIT FOR A KING: Reviewing the Laws of Bishul Akum & Bishul Yisroel

It is not uncommon for food manufacturers to call us with a keen interest in kosher certification but who don’t have the slightest idea what it takes to produce a kosher product. What complicates matters is that they would like to have a kashrus tutorial capsulized into a telephone conversation. Obviously, we can’t give a thorough kashrus course over the phone, but we can categorize practical kashrus into three main areas: ingredients, equipment, and process.

Cholov Yisroel: Does a Neshama Good

There is a general rule in Halacha, Jewish Law, governing natural derivatives from Kosher and non-Kosher animals. Kol hayotzei min hatahor tahor, vichol hayotzei min hatamei tamei. Derivatives from a Kosher species are Kosher, while derivatives from a non-Kosher species are not. Therefore, milk produced by Kosher mammals, such as cows, goats, and sheep, are considered Kosher, while milk from non-Kosher mammals, such as horses, pigs, camels, or whales, are forbidden.

A Mashgiach’s Job is Never Done

David Mitnick, Star-K Mashgiach

The world of Kashrus is exciting, stressful, and always a challenge for a Mashgiach. Changes in product certification, facility protocol, and current events, in addition to a working knowledge of Kashrus, are items in which every Mashgiach must be well-versed to be a powerful player in any kitchen. The role of the Mashgiach, once typecast as that of an old man with a white beard sitting on a chair, has changed. Not only does the Mashgiach need to know to keep dairy and meat separate, the “new-age” Mashgiach must relate to the kitchen and serving staff with diplomacy and grace in order to be a respected member of the team.

STAR-K Tevilas Keilim Chart
clear search

Kashrus Kurrents Summer 2015 | Updated March 2024

(ORIGINALLY PUBLISHED AS: A Practical Guide to Tevilas Keilim)

Download chart

For a summary of the halachos involved, refer to Tevilas Keilim: Basic Guidelines.

UTENSIL
NEED FOR TEVILA – WITH OR WITHOUT A BRACHA

Aluminum Pan, Disposable
Tevila without a bracha if intended to be used only once; tevila with a bracha if intended to be used more than once.[1]

Aluminum Pan, Non-disposable
Tevila with a bracha[2]

Apple Corer (metal)
Tevila with a bracha

Baking/Cookie Sheet
Tevila with a bracha

Barbeque Grill
Racks require tevila with a bracha, other components do not require tevila.

Blech
No tevila

Blender/Mixer
Glass or metal bowl, metal blades and other attachments require tevila with a bracha, other components do not require tevila.  Handheld immersion blender requires tevila with a bracha.

Bottle (metal or glass)
Tevila with a bracha. If bought filled with food and subsequently emptied by a Jew, does not require tevila.[3]

Brush (grill, egg yolk, pastry)
No tevila

Cake Plate (metal or glass)
Plate needs tevila with a bracha, cake plate cover does not require tevila.

Can (metal or glass)
Tevila with a bracha. If bought filled with food and subsequently emptied by […]

The Story Behind Kosher Plastics

Until about two years ago kashrus organizations paid little attention to the kosher status of packaging materials used to contain food prepared even under the most stringent supervision. Therefore, it was quite probable that a can of soup —- made up of ingredients without even a trace of anything nonkosher, prepared on completely kosherized equipment, and where the water from the steam system having been previously used to cook cans containing nonkosher products, was completely drained —- was packaged and cooked in a steel can coated with a tallow based butyl stearate oil (BSO)! Fortunately, due to the efforts of Rabbi Jonah Gewirtz, Chairman of CSPT, working together with the Circle U and the Star-K, we were successful in having every major steel company in this country that produces steel for use in food packaging switch to a vegetable based BSO. Similarly, other lubricants and finishing […]

A Crystal-Clear Halachic Approach to Glass

Glass is one of nature’s most versatile products created from some of nature’s most prevalent raw materials: sand, soda and lime. In the food industry glass applications are extremely diverse. Glass can be made into delicate drinking glasses as well as tough heat resistant ceramic cook tops withstanding temperatures over 1000°F.

Terumos and Ma’asros

Published Spring 2002 | Updated August 2024

Eretz Yisroel has the unique privilege of being the recipient of the Ribono Shel Olam’s brachos throughout the year. Its agricultural industry continues to grow and flourish. Consumer products from Israel that are exported to the American marketplace include Jaffa oranges, grapefruits, pomelos, clementines, carrots, parsley, Carmel and canned tomatoes, peppers, candies, jams, jellies, olives and pickled products. Industrial products used for manufacturing include tomato sauce, tomato paste, orange oil, lemon oil and spices.

Besides for all the ingredients and processing concerns which confront the kosher consumer, additional kashrus requirements apply to foods grown, produced or imported from Israel. A consumer must be sure that terumos and ma’asros have been properly separated before eating, and that the fruits do not come from trees that are orla or neta revai or shemita.

What Are Terumos and Ma’asros?

Terumos (literally, separations) and ma’asros (literally, a tenth) were compulsory […]

Charting the Course of Orla

Published Summer 2013
When a tourist comes to Israel from the Diaspora one of the things he has to get used to is the mitzvos hatluot b’aretz, the mitzvos that are unique to Israel. After he gets through taking trumah and maaser, tithing, and makes sure he doesn’t come during shmitta (beware next year!) he is suddenly hit with orla. And when he asks how to cope with this unfamiliar problem he is sometimes given a chart with a list of fruits and orla percentages which, if he isn’t totally confused, the charts will certainly finish off the job. “What do all these percentages mean? And why,” he asks, “can’t someone give me a yes or no answer instead of these percentages?” So what do the percentages on these fruit charts mean?

OTZER BAIS DIN: Proper Distribution of Shmitta Produce

Rav Aharon Tendler, Ner Israel Mechina High School

Our rabbis have taught that if the Jewish nation would observe two Shabbosos, they would be immediately redeemed1.  Generally, this is understood to mean that the redemption will come if we observe two consecutive Shabbosos. The question arises as to the significance of two Shabbosos, and many responses have been provided.  There is a beautiful answer offered by the former Chief Rabbi of Moscow, Rabbi Fishman, in his introduction to a commentary on the Yerushalmi Mesechta Shevi’is.  Rabbi Fishman maintains that the two Shabbosos actually refer to the seventh day of the week when we refrain from all melacha, constructive work, and the seventh year of shmitta, when we withdraw our ownership from  the land of Israel and declare all produce ownerless and available for all to take.

The Kosher Formula

The Jewish people, the am hanifchar, the chosen people, have been faithful to the Torah’s commandments for thousands of years. Of those commandments, Kashrus has served as an anchor of the Jew to his G-d, ensuring that even in the most mundane of life’s requirements, one is always cognizant of the source of one’s subsistence. Our Rabbis also teach us that there is a mystical relationship between the foods we eat and our spiritual well being.

Knowing Your Beans: The Kashrus of Coffee

Bedouins savor it thick and rich out of small ornate cups. Some like it black, while others must have cream and sugar. The adventurous will try one of the many flavored coffees available, while the purist would not hear of it. No matter how you enjoy it, coffee remains one of the most popular beverages on the planet. The per capita consumption of coffee in the U.S. alone approaches 30 gallons a year.

Kashrus in High Spirits

Winter 2005

Jewish life-cycle events, be it a bris, a bar mitzvah, or a wedding, are special occasions that we anticipate eagerly and celebrate with joy. At any simcha, we fill our cups with wine, raise our glasses of schnapps, and with great fervor pronounce a resounding “L’chaim!” in honor of the blessed event. This custom of melding alcohol with simcha has been a Jewish practice from time immemorial. The cup that is raised today, however, bears very little resemblance to that of yesteryear.

The Art of Kosher Wine Making

In the Torah’s eye, nature’s quintessential beverage is “the fruit of the vine,” grape wine. Our Sages tell us of wine’s importance throughout the calendar year and throughout the Jewish life cycle. The Jewish People sanctifies Shabbos or Yom Tov over wine. At the Pesach Seder we express the four expressions of Geulah (freedom) over wine. One recites Sheva Brachos at a wedding over wine. A special Bracha was established by our Sages especially for wine, “Borei Pri HaGafen “ .

Kashering Liver

Before one is permitted to indulge in kosher Jewish delicacies such as chopped liver, liver steaks and onions, or sauteed chicken livers, raw liver must undergo various processes before the liver is deemed fit for kosher use. Firstly, as with all kosher meat, the liver must come from a kosher species of animal or fowl that has been schechted, slaughtered, in the proper manner prescribed by the Torah. If it is an animal liver, all the fats must be meticulously removed. Furthermore, the Torah forbids eating the blood of an animal or bird, therefore, it is necessary to extract the blood from the kosher slaughtered meat or liver.

It’s a Siman that it’s Kosher: Avoiding Bosor Shenisalaim Min Hoayin

An Interview With Rabbi Moshe Heinemann
STAR-K Rabbinic Administrator


INTRODUCTION:

The world of kashrus has played, and continues to play, a dominant role in the life of a Jew and the life blood of Judaism. This centrality is evidenced by the significant halachic treatment of kashrus in the Shulchan Aruch, by our Poskim, and in contemporary Torah journals, as well as the particular attention paid to the kosher consumer stretching from the aisles of the supermarket to the media portfolios of the marketplace.