Why beer—and other foods you’d never suspect—requires kosher certification
Q: Beer never used to require kosher certification. What changed?
A: Historically, many beers were considered acceptable without kosher certification. However, that is no longer reliably the case. Due to the growth of craft beers, flavored varieties, barrel-aged products and shared equipment, OU Kosher has updated its beer policy for all OU establishments and certified events. Beginning in 2026, only beers with reliable kosher certification may be served in OU-certified restaurants and at OU-certified catered events.
The OU is joined by the OK and Star-K, along with several local kosher supervision agencies, in adopting this policy to maintain consistent and reliable kosher standards across the industry.
A list of nearly 1,000 currently certified beers and breweries is available at oukosher.org/kosher-beer-list. The list includes products from major brands like Coors and Budweiser.
Q: Why are beer policies changing now?
A: The long-standing assumption that beer did not require kosher certification was based on the idea that it contained only four basic ingredients—grain, water, hops and yeast—all of which are inherently kosher. Government regulations also reinforced this assumption. For example, US law requires added flavorings to be disclosed on packaging.
However, the explosion of craft breweries—small, independent manufacturers—has significantly changed beer production. These breweries now produce sours, stouts, flavored beers and barrel-aged products and account for nearly 14 percent of US beer sales by volume.
According to OU Kosher’s COO, Rabbi Moshe Elefant, the introduction of additives creates concerns even for beers that appear “plain” because breweries often use the same vats for multiple recipes. While equipment is cleaned between batches, cleaning is not the same as kashering, and therefore new kashrus issues have arisen that did not exist in the past.
Q: What kinds of beer flavorings can be problematic?
A: Rabbinic inspectors may encounter unexpected non-kosher ingredients in breweries, including oyster broth, clam juice, wine and milk products.
Some beers contain dairy ingredients, which add a subtle creaminess and opacity. Without realizing it, you could be drinking a beer that contains lactose. This, of course, has very serious kosher ramifications.
“The good, old-fashioned beer everybody would drink was simple,” says Rabbi Elefant. “Now, to give them an edge, manufacturers enhance the beer by adding all sorts of flavors.”
While the OU seeks to make kosher food widely available and accessible, these developments in the beer industry are concerning. “We’re not looking to be onerous,” explains Rabbi Elefant. “But when we tell someone they can consume a product, we need to be fully confident that it is kosher without question.”
Q: What other products look like they wouldn’t need a hechsher—but actually do?
A: Many foods that appear inherently kosher should not be consumed without certification. Common examples include ice cream, bread and coffee.
Q: Isn’t ice cream just milk and sugar? Why does ice cream need kosher certification?
A: Ice cream was once considered a straightforward dairy product, made from simple ingredients such as fresh cream, sugar and natural flavorings like vanilla, cocoa or fruit. Today, however, ice cream often contains processed ingredients—such as emulsifiers, stabilizers and artificial flavorings—that may be derived from non-kosher animals. Even the cream can come from a non-kosher source. One common issue is whey cream: A byproduct of the cheese-manufacturing production, whey cream can be non-kosher.
A “K” on a label does not necessarily mean there is a rabbi—or any supervision—behind the product.
Emulsifiers are a particularly serious kashrus concern. For example, diglycerides—emulsifying agents made from fatty acids and glycerol—may be derived from animal sources and therefore require kosher certification. In addition, manufacturing equipment is frequently shared with non-kosher products, creating a risk of cross-contamination. Dried dairy ingredients such as powdered milk, lactose or whey are spray dried and therefore require hashgachah to ensure that the spray drier (a heated chamber) was properly kashered before use.
For these reasons, ice cream requires reliable and careful kosher supervision.
Q: What if the brand of ice cream is kosher, but the shop itself is not kosher-certified?
A: If a non-certified establishment sells kosher-certified ice cream, one may only purchase it if the original carton bears a visible hechsher, and the scoop used is clean and has not been used for non-kosher products. This precaution is necessary to avoid cross-contamination.
Q: What could be the concern with purchasing bread from a non-certified bakery?
A: At first glance, bread may seem simple enough. But without kosher certification, there are a few issues that aren’t always visible to the consumer.
Bakeries can bake breads that contain non-kosher cheese, non-kosher raisin juice or even animal fats on the same pans and in the same ovens. The shortening used in the bread requires kosher certification. Even if it is an all-vegetable shortening, it may be produced in a facility that processes both animal and vegetable fats, which can compromise its kosher status.
In a situation where the ingredients panel for a bread does not list oil, it is still possible that oil was used to grease the pans to prevent sticking. The oil is not viewed as an ingredient in the bread but rather as a processing aid, and the FDA does not require processing aids to appear on ingredient labels, so they may be present even when they are not listed.
Finally, if a bakery is Jewish-owned, challah must be separated. Without kosher supervision, there is no way to ensure that this requirement has been fulfilled.
Q: Can one buy a cup of coffee anywhere—such as at a rest stop—without kosher certification?
A: Plain black coffee may be purchased as long as it is served in a paper cup, which avoids the use of utensils that may have been used with non-kosher foods or washed together with non-kosher dishes.
Other coffee drinks—such as lattes and cappuccinos—use frothed milk, which introduces concerns about shared equipment: The steam wand and the metal cup used to froth milk may have also been used for non-kosher beverages or may have been washed in a non-kosher dishwasher, and one should ensure this is not the case before ordering.
Flavored coffee should not be purchased without kosher certification, as flavoring ingredients may be derived from non-kosher sources.
Q: What does a “K” on a product mean?
A: Quite simply, it may mean nothing at all. Unless you know who stands behind that “K,” it offers no real assurance of kosher supervision. In some states, a manufacturer can place a “K” on a label even if there is no supervision whatsoever. The letter “K” is meant to stand for “kosher,” but it is not a protected symbol; anyone can use it. By contrast, the OU is a registered trademark. No company may place an OU on a product without authorization and ongoing supervision.
Rabbi Yaakov Luban, a recently retired OU Kosher rabbinic coordinator who served in that capacity for decades, often illustrated this point with a story.
An OU-certified company once asked whether it could use breadcrumbs from another manufacturer whose product bore a “K.” To clarify, Rabbi Luban contacted the breadcrumb company and asked a simple question: “Who is the rabbi behind the ‘K’?”
They provided a name. Rabbi Luban didn’t recognize it, so he called a colleague who lived in the same community. “Do you know this rabbi?” he asked. “Of course,” the colleague replied. “He passed away five years ago.”
When Rabbi Luban relayed this information back to the company, there was a long pause. Finally, the person on the line said, “Oh—that explains why we haven’t seen him in so long.”
The lesson is straightforward: A “K” on a label does not necessarily mean there is a rabbi—or any supervision—behind the product.