Butter is technically a processed food, but it sits near the bottom of the processing spectrum. It’s made by churning cream until the fat separates from the liquid buttermilk, a transformation that has been done by hand for thousands of years. By any regulatory or scientific definition, that transformation from raw cream into a new product qualifies as “processing.” But the kind of processing matters enormously, and butter is far removed from the industrial products most people picture when they hear the term “processed food.”
How Food Classification Systems Categorize Butter
The most widely used framework for ranking foods by their level of processing is the NOVA system, developed by nutrition researchers and referenced by the World Health Organization. NOVA divides all foods into four groups: unprocessed or minimally processed foods, processed culinary ingredients, processed foods, and ultra-processed foods.
Butter falls into Group 2: processed culinary ingredients. This category covers substances derived from whole foods through simple processes like pressing, refining, grinding, or drying. Oils, sugar, and salt also belong here. The defining trait of Group 2 items is that they aren’t meant to be eaten on their own. They exist to prepare, season, and cook whole foods. So while butter is processed in the literal sense, NOVA places it two full tiers below ultra-processed products like packaged snack cakes, instant noodles, or flavored chips.
The FDA uses a different but compatible lens. Under U.S. food law, any activity that transforms a raw agricultural commodity into a distinct product counts as manufacturing or processing. Cream is a raw commodity; churning it into butter creates something new. That makes butter a processed food in regulatory terms, the same way chopping whole lettuce into bagged salad greens technically creates a “processed food.” The label tells you very little about nutritional quality.
What Actually Happens When Butter Is Made
Commercial butter production involves just a few steps. Cream with 35 to 40 percent milkfat is first pasteurized, typically by heating it to 185°F for 15 seconds or to 165°F for 30 minutes. This kills harmful bacteria and deactivates enzymes that would cause the fat to break down and go rancid. The cream is then cooled to around 50°F and held for about an hour so the fat globules firm up and become ready to churn.
Churning takes roughly 45 minutes. The mechanical agitation flips the cream’s structure inside out: instead of fat droplets suspended in liquid, you get liquid trapped inside a solid mass of fat. The leftover liquid, buttermilk, is drained off, and the butter is worked into a smooth, continuous block. Salt may be added at this stage, and that’s essentially it. The ingredient list on a basic stick of butter reads: cream, salt. Some brands add a small amount of annatto (a plant-based coloring) or vitamin A, but the product remains simple.
Raw butter skips even the pasteurization step. It’s churned directly from unheated cream, which preserves more of the naturally occurring bacteria and enzymes. Raw butter is legal to sell in some U.S. states and is popular among people who prefer minimal intervention in their dairy products. Whether pasteurized or raw, butter involves no chemical additives, no emulsifiers, and no industrial flavor engineering in its standard form.
Why Butter Isn’t Ultra-Processed
The health concerns driving today’s conversation about processed food are almost entirely about ultra-processed products, NOVA’s Group 4. These are industrial formulations made from extracted substances (hydrogenated oils, modified starches, flavor compounds) that you’d never find in a home kitchen. They’re designed for convenience, long shelf life, and intense palatability.
Margarine is a useful comparison. Traditional stick margarine is made by blending vegetable oils, often with emulsifiers, colorings, and preservatives to mimic butter’s texture and appearance. Many margarines qualify as ultra-processed. Butter, by contrast, is a single ingredient (cream) physically transformed into a solid fat. The gap between the two products illustrates why lumping all “processed” foods together is misleading. A food that undergoes one mechanical step is fundamentally different from one assembled in a factory from a dozen extracted ingredients.
Low-fat butter substitutes blur this line further. Reduced-fat versions of butter replace some of the fat with water and then require emulsifiers, stabilizers, and preservatives (each under 1% of the product) to hold the mixture together. These modified spreads are more processed than regular butter, even when they share shelf space and similar packaging.
Nutrition and Health Considerations
Butter is a concentrated source of saturated fat, and that’s the main nutritional concern regardless of how it’s classified. A tablespoon contains about 7 grams of saturated fat, roughly a third of the daily limit recommended by most dietary guidelines. It also delivers a meaningful dose of vitamin A, providing over 10% of the daily value per tablespoon.
A large cohort study published in 2025, tracking more than 221,000 adults for up to 33 years, found that the highest butter intake was associated with a 15% higher risk of death from any cause compared to the lowest intake. Higher butter consumption was also linked to a 12% increase in cancer mortality. In contrast, replacing about two teaspoons of daily butter with plant-based oils like olive, canola, or soybean oil was associated with a 17% reduction in overall mortality.
These findings don’t mean butter is dangerous in small amounts. They suggest that relying on butter as your primary cooking fat, day after day, carries measurable long-term risk compared to using plant-based oils. The processing level of butter isn’t what drives this risk. It’s the saturated fat content. A completely unprocessed food can still be worth limiting, just as a technically “processed” food like olive oil can be beneficial.
What This Means in Practice
If you’re trying to avoid processed food for health reasons, butter is not the problem. The products worth scrutinizing are the ones with long ingredient lists full of substances you wouldn’t stock in your pantry: hydrogenated oils, high-fructose corn syrup, artificial flavors, and chemical preservatives. Butter, with its one or two ingredients and centuries-old production method, is about as close to a whole food as a dairy product gets without being milk or cream itself.
That said, “not ultra-processed” doesn’t automatically mean “eat as much as you want.” Butter is calorie-dense and high in saturated fat. Using it to finish a dish, spread on toast, or sauté vegetables is perfectly reasonable. Using it as the backbone of your entire diet is where the long-term data suggests caution. The processing question and the health question are two separate conversations, and conflating them is one of the most common mistakes people make when trying to eat well.