Cheddar cheese is naturally white to pale yellow. The bright orange color many people associate with cheddar comes entirely from added plant-based dye, not from anything inherent in the cheese itself. Milk contains no orange pigment, so without coloring, cheddar ranges from ivory to a soft buttery gold depending on what the cows were eating.
Why Some Cheddar Is Naturally Yellower
The slight golden tint in undyed cheddar comes from beta carotene, the same pigment found in carrots, pumpkins, and sweet potatoes. Cows that graze on fresh grass take in beta carotene, which ends up in their milk fat and gives it a warmer, more buttery hue. In spring and summer, when herds are out on pasture, the milk is noticeably yellower. In fall and winter, when cows eat hay and silage with far less beta carotene, their milk is nearly white.
This seasonal swing means that cheese made in June looks different from cheese made in January, even from the same farm using the same recipe. That natural variation is part of why cheesemakers started adding dye in the first place: they wanted a consistent product year-round.
Where the Orange Color Actually Comes From
The dye used in orange cheddar is annatto, a natural extract from the seeds of the tropical achiote tree. The coloring compounds in annatto are plant pigments closely related to carotenoids, and they’ve been used in food for well over a hundred years. Annatto was so closely associated with dairy that it was once simply called “butter color” or “cheese color” in the industry.
Annatto is added early in the cheesemaking process, before the milk coagulates into curds. It disperses evenly through the liquid milk, which is why the final cheese has a uniform color rather than streaks or spots. The dye itself contributes no meaningful flavor. A block of sharp orange cheddar and a block of sharp white cheddar made the same way, from the same milk, taste essentially identical.
The History Behind Orange Cheddar
The tradition of dyeing cheese traces back to 13th-century England, and the story involves a bit of fraud. Dairymen had started skimming most of the fat from cow’s milk to make butter, which was a luxury good. Golden-hued butter fetched higher prices, so they dyed it with ingredients like marigold to keep it looking rich. The leftover low-fat milk produced pale, inferior cheese. To disguise the fact that the good fat had been removed, cheesemakers carried the dyeing practice over from butter to cheese.
By the 17th century, cheesemakers in Leicestershire, England (where cheddar’s ancestor originated) began using annatto seed specifically to make their cheese stand out from competitors. The practice spread, and by the 1700s, most English cheeses were dyed regardless of fat content. Consumers had simply come to expect a deeper color.
When cheesemaking took off in the American Midwest, producers dyed their cheddar to compete with established European imports. Orange cheddar became the American standard, and the association stuck for generations.
Regional Preferences: White vs. Orange
Today, the color of your cheddar largely depends on where it was made and the traditions of that region. In the United States, orange cheddar dominates grocery store shelves, particularly from Wisconsin and other Midwestern dairy states. The orange look became tied to comfort food and brand consistency.
In the United Kingdom, traditional farmhouse cheddar is typically left undyed, staying its natural ivory or pale straw color. New England follows a similar tradition: Vermont is known for its white cheddar, which many American consumers associate with a more “artisan” or “natural” product. That perception is largely about marketing and cultural habit rather than any real quality difference. Both versions are real cheddar, and U.S. federal regulations allow coloring as an optional ingredient with no impact on the cheese’s classification.
Is Annatto Safe?
Annatto is considered safe by food regulatory agencies worldwide, and it appears on ingredient labels when used. Allergic reactions to annatto are rare but have been documented, with reported symptoms including hives and swelling. In extremely uncommon cases, more serious reactions have occurred. If you’ve had unexplained allergic symptoms after eating orange-colored dairy products, annatto is worth mentioning to your allergist.
For the vast majority of people, the only difference between white and orange cheddar is appearance. The flavor, texture, fat content, and nutritional profile are determined by the milk, the aging process, and the cheesemaking technique, not by the color.