FDA Reviews Mustard, Celery, and Buckwheat for Inclusion as Major Food Allergens

Imagine standing in your warm, inviting kitchen, the rich scent of a simmering stew filling the air. You have invited a friend over who manages severe food allergies, and you have meticulously checked every label in your pantry. You avoided the 'Big 9' allergens, ensuring there is no dairy, wheat, or soy in sight. You season the broth with a beautiful, complex spice blend and serve the meal with confidence. But hidden within the comforting warmth of that dish is a perfectly legal secret: mustard seed and celery powder, concealed under the single, generic word 'spices' on the ingredient list.[4]

This tension between what we assume is safe and what the law actually requires leaves millions of Americans vulnerable every time they sit down to eat. Under current United States regulations, manufacturers are only required to explicitly declare nine major food allergens. Everything else can be grouped into proprietary flavorings or spice blends to protect trade secrets. But that regulatory landscape is shifting. The FDA is now formally reviewing mustard, celery, and buckwheat for potential inclusion as major food allergens, a move that would fundamentally alter how we read labels and stock our pantries.[1]

The push for this review stems from a glaring gap between the American grocery aisle and the rest of the world. When you travel to London, Paris, or Rome, the menus and food packages look remarkably different. The European Union mandates the clear labeling of 14 major allergens, explicitly calling out celery and mustard. In Japan and Canada, buckwheat is strictly regulated. Yet in the United States, these ingredients remain in a regulatory blind spot, forcing those with sensitivities to play a dangerous guessing game with their daily meals.[2][4]

To understand why this matters, we have to look at the mechanics of these specific allergies. Mustard and celery might sound like wholesome, rustic ingredients, but they contain highly stable proteins that survive the intense heat of cooking and the harsh acids of human digestion. For a small but growing subset of the population, a microscopic trace of mustard powder in a salad dressing or celery salt in a barbecue rub can trigger a life-threatening anaphylactic reaction.[2][3]

Buckwheat presents a different kind of paradox. As the culinary world has embraced gluten-free baking, buckwheat—which is a fruit seed related to rhubarb, not a true wheat—has become a beloved staple. It gives a gorgeous, earthy depth to pancakes and a rustic chew to soba noodles. But as its presence in our kitchens has grown, so have the reports of severe allergic reactions. Because it is frequently used as a wheat substitute, it often ends up in the exact 'allergy-friendly' foods that sensitive consumers seek out.[3][4]

The FDA's review process, formalized in a 2026 guidance document, establishes a rigorous framework for evaluating these hidden threats. The agency is not simply looking at how many people report feeling unwell; they are analyzing clinical data on the prevalence of the allergy, the severity of the reactions, and the allergenic protein's resistance to food processing. If an ingredient meets the threshold of public health importance, the FDA has the authority to mandate its explicit disclosure on every packaged food sold in the country.

Advocacy groups have been pleading for this exact intervention for years. Organizations like the Asthma and Allergy Foundation of America and SnackSafely have documented the preventable tragedies that occur when consumers are blindsided by undeclared ingredients. They argue that the 'spices' loophole is a relic of an era before complex, globalized food manufacturing, and that modern consumers have a fundamental right to know exactly what they are putting into their bodies.

Closing this loophole, however, requires untangling a massively complex global supply chain. Spices are often harvested by smallholder farmers across the globe, aggregated in massive facilities, and processed on shared equipment. A facility grinding cumin one day might grind mustard seed the next. Ensuring that a generic chili powder is completely free of trace mustard cross-contact requires a level of testing and segregation that many spice purveyors are currently unequipped to handle.[4]

For food manufacturers, the financial stakes are enormous. Adding new major allergens means auditing thousands of suppliers, redesigning packaging for tens of thousands of products, and potentially reformulating beloved recipes to remove the offending ingredients entirely. When sesame was added to the major allergen list in 2023, some commercial bakeries found it cheaper to intentionally add sesame to all their products and label them accordingly, rather than attempting to clean their massive production lines to a zero-trace standard.[1][4]

Despite these logistical hurdles, the momentum toward total transparency feels inevitable. International trade is already forcing the hands of major multinational brands. A company producing a packaged soup for both the American and European markets often finds it more efficient to adopt the stricter EU labeling standards globally, rather than maintaining two separate packaging inventories. As a result, you may already notice some forward-thinking brands voluntarily highlighting celery or mustard on their American labels.[1][2]

While the FDA conducts its review—a process that could take years before any new labels hit the shelves—home cooks and hosts must navigate the grocery aisles with heightened awareness. If you are cooking for someone with a rare allergy, the safest approach is to avoid generic 'spice' or 'natural flavor' blends entirely. Instead, build your flavor profiles from scratch using individual, single-ingredient herbs and spices.[4]

You can also look for imported European products, which are legally required to adhere to the EU's 14-allergen standard, offering a clearer window into the ingredient list. Calling manufacturers directly to ask about their proprietary blends is another tedious but necessary step for those managing severe sensitivities.[2][4]

Ultimately, the FDA's willingness to look beyond the 'Big 9' represents a profound shift in how we value consumer safety over corporate convenience. It acknowledges that the joy of sharing a meal should not come with a side of anxiety. By dragging these hidden ingredients out of the shadows and onto the label, we move one step closer to a food system where everyone can pull up a chair to the table with peace of mind.[4]