California just changed how the law defines ultra-processed food, judging what’s actually in a product instead of checking it against a fixed list of banned ingredients. A handful of everyday pantry staples clear the new bar without issue, right as Kids Eat Right Month has families rethinking what goes in the lunchbox again. Some of the most familiar foods in the pantry just got the easiest pass of all.
A scientific classification system called Nova has sorted foods by processing level since the late 2000s, giving researchers a working vocabulary for ultra-processed long before any lawmaker touched the term. That gap between science and statute fueled years of arguing over what belongs in a school lunch, with most state laws settling for a fixed list of banned additives instead of judging food by what’s actually inside it. California just became the state that wrote that distinction into law.
The definition runs on 2 conditions
California’s law runs a two-part test rather than a fixed list of banned ingredients, making it the first state definition built around what a food actually contains rather than a preset list. A food earns the label only if it contains at least one additive from a specific list, such as emulsifiers, stabilizers, colors or flavor enhancers. It also has to separately meet one of two nutrient-based conditions: either high amounts of saturated fat, sodium or added sugar, or the presence of a nonnutritive sweetener or another specified substance such as hydrogenated starch hydrolysates or sucralose. Additives alone don’t trigger the label, and neither does a long ingredient list on its own, since both parts of the test have to line up together.
The law also creates two new categories for regulators to define: “ultra-processed foods of concern” and “restricted school foods,” which narrows the definition to the products state health officials consider most worth targeting. Deciding exactly which foods land in those categories won’t happen overnight. State regulators have to weigh peer-reviewed research on health harms alongside whether a substance has already been banned, restricted or flagged with a warning label in another state, federal or international jurisdiction before finalizing the list.
Familiar pantry staples clear the bar
That narrower target leaves a surprising number of pantry regulars untouched, at least going by the categories the law spells out. Canned produce falls under the exemption for minimally processed foods, a category broad enough to plausibly cover something as simple as a plain can of crushed tomatoes with no added stabilizers.
The same exemption generally covers pureed foods, which would seem to include something like an applesauce pouch, since the definition targets additive types rather than packaging format or lunchbox convenience. Dried fruit gets a similar pass under that same umbrella, despite looking heavily manufactured next to fresh produce in the snack aisle. Foods supplied through USDA commodity programs carry their own carve-out regardless of how they’re prepared in a school kitchen, and Class 1 milk, the plain variety schools pour by the carton, skips the new definition entirely.
A slow rollout, with the nation watching
Nothing on a lunch tray changes right away, since the law phases in over roughly a decade. State regulators must finalize which foods are considered concerning by June 2028; schools must start phasing those foods out by July 2029; vendors lose the ability to supply them starting in July 2032; and schools reach full compliance by 2035. That runway gives food companies selling into California’s school market years to reformulate before enforcement bites.
Arizona passed a narrower school law in 2025, banning 11 specific additives outright, without California’s broader ingredient-and-nutrient test, and the federal government has been working on its own definition since a 2025 request for public input. However, no final version has been issued, and officials have acknowledged the process is proving difficult.
More states will likely follow with their own criteria-based laws rather than fixed additive lists, and the next real test comes once California’s regulators start deciding exactly which foods land on the restricted side. For now, the lunchbox debate over what counts as processed just got a lot more precise.
Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The contents of this article are for informational purposes only and do not constitute medical advice. The content presented here is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition or dietary changes. Reliance on any information provided by this article is solely at your own risk.
Mandy writes about food, home and the kind of everyday life that feels anything but ordinary. She has traveled extensively, and those experiences have shaped everything, from comforting meals to small lifestyle upgrades that make a big difference. You’ll find all her favorite recipes over at Hungry Cooks Kitchen.