1970s Supermarket Staples vs. Their 2020s Reformulations

Before we get to the specific products, it helps to understand why a company would change a beloved recipe at all. Reformulation is rarely a whim. More often it is a response to something outside the kitchen, and four forces tend to show up again and again: a new rule from the FDA, fresh science about how an ingredient behaves in the body, the simple math of what an ingredient costs, and pressure from shoppers who want cleaner labels. Any one of these can be enough to send food scientists back to the drawing board.

What makes this interesting is that the packaging almost never advertises the change. A brand has every reason to keep its look consistent, because that familiarity is what keeps you reaching for it. So the trans fat quietly leaves the shortening, the synthetic dye slips out of the cheese powder, and the front of the box stays exactly the same. If you have ever wondered why the line between a lightly processed and an ultra-processed food feels blurrier than it used to, this steady, invisible tinkering is a big reason why.

Here is a snapshot of the staples we will walk through, the change each one went through, and roughly when it happened. It is a handy way to see the pattern before diving into the details.

If any product feels timeless, it is Coca-Cola. Yet the sweetener in your American Coke is not what it was in the early 1970s. Back then, the cola was sweetened with sugar. Beginning around 1980 and finishing in about 1984, Coca-Cola shifted its US production to high-fructose corn syrup, a cheaper sweetener at a time when sugar prices were high and corn was heavily subsidized. Shoppers in other countries never saw the change, which is exactly why sugar-sweetened "Mexican Coke" is sold as a distinct novelty in the States.

The story took another turn in 2025. Amid renewed public interest in what goes into everyday foods, Coca-Cola announced it would bring a cane-sugar version of Coke to American shelves, a move reported by NPR as rolling out later that year. It is worth being clear-eyed about what that shift does and does not mean. The flagship recipe still uses corn syrup, and the cane-sugar Coke is a separate product rather than a replacement. Nutritionally, the two sweeteners are quite similar, so the return of cane sugar reads more as a nod to preference and nostalgia than a health upgrade.

Few reformulations were as sweeping as the disappearance of artificial trans fat. In the 1970s, partially hydrogenated oils gave shortenings, stick margarines, and packaged baked goods their texture and long shelf life. They were everywhere, and they were also the main dietary source of the trans fat later linked to heart concerns.

The turning point was regulatory. In June 2015, the FDA issued a final determination that partially hydrogenated oils are no longer "generally recognized as safe" for use in food, setting compliance dates that ran mainly to 2018 and wrapped up by 2021. Some brands moved even earlier. Crisco was reformulated back in 2007 to meet the "zero grams trans fat per serving" standard, trading much of its partially hydrogenated oil for a blend of fully hydrogenated and liquid oils. The result looks and behaves much like the old can, which is a small testament to how much quiet food-science work went into keeping a classic feeling classic.

The vivid colors of childhood favorites have their own reformulation stories, and they did not all end the same way. Kraft Macaroni & Cheese kept its cheerful orange glow for decades with the help of synthetic dyes. Then, in a change the company had been working toward for years, Kraft removed Yellow 5 and Yellow 6 from its Original recipe in 2016, reaching for paprika, annatto, and turmeric instead. The swap was subtle enough that many families never noticed, which was rather the point.

Trix cereal tells the opposite story. General Mills reworked Trix in 2016 to color it with sources like turmeric, strawberries, and radishes. The trouble was that natural pigments could not quite reproduce the electric brights that fans associated with the cereal, and the flavor shifted a little too. Enough shoppers complained that, as CNBC reported, the company brought the classic artificial-color version back in 2017 and offered both. It is a useful reminder that reformulation is not a one-way street, and that our attachment to how a food looks can be just as strong as our feelings about what is in it.

If you enjoy comparing the old and new versions of a favorite snack food, the color aisle is a fascinating place to do it.

Some ingredients faded out so quietly that most people never knew they were there. Brominated vegetable oil, or BVO, was one of them. For years it worked as an emulsifier in certain citrus-flavored sodas and sports drinks, keeping the flavoring evenly mixed rather than floating to the top.

BVO's long goodbye played out in two acts. First came consumer pressure: Gatorade removed BVO from its formula back in 2013 after a public petition, and other brands gradually followed. Years later the federal government made it official. In July 2024, the FDA revoked its authorization for BVO in food, pointing to studies conducted with the National Institutes of Health that raised concerns about effects on the thyroid and about bromine building up in the body. The gap between Gatorade's voluntary move and the federal ban is more than a decade wide, which is a good example of how industry and regulators sometimes arrive at the same place by very different routes.

Not every reformulation happens in the food itself. Sometimes it happens on the label, where the claims and cautions printed on a package can shift with the evidence just as much as any recipe. Saccharin, the artificial sweetener that defined 1970s diet drinks and the little pink packet on the diner table, went through exactly that kind of change.

In the 1970s, animal studies linked high doses of saccharin to bladder cancer in rats, and in 1977 regulators moved toward a ban. Congress stepped in instead, pausing the ban and requiring a cautionary warning label on saccharin products. Decades of further research told a more reassuring story, concluding that the mechanism behind those rat tumors did not carry the same meaning for people. The warning-label requirement was repealed in 2000, and saccharin remains an approved sweetener today, as the FDA notes in its overview of how sweeteners are regulated. The product on the shelf barely changed, but the words on the package, and the science behind them, changed a great deal. It is one of the clearest examples of how a label can evolve while the product inside stays largely the same.

The condensed soup aisle has its own back-and-forth to tell. Through the second half of the 2000s, Campbell's leaned hard into sodium reduction, reworking dozens of its condensed varieties. By 2010 the company had reduced sodium across many top soups by roughly a quarter to nearly half, using a lower-sodium sea salt to soften the impact on taste.

Then the pendulum swung back. With sales sliding and some customers finding the lower-salt versions flatter than they remembered, Campbell's added sodium back to parts of its lineup in 2011. The episode is a candid illustration of the tightrope food companies walk. Salt is not only about flavor; it shapes the whole experience of a soup, and pulling too much of it out can turn a comfort food into something people quietly stop buying. Reformulation, in other words, has to please the palate as much as the nutrition panel.

Breakfast cereal is one of the most reformulated corners of the store, and anyone who scans the breakfast aisle closely has probably sensed it, though the changes have come gradually rather than in a single dramatic swap. In 2005, General Mills committed to making every one of its Big G cereals with whole grain, adding a meaningful amount of it to boxes that had long been mostly refined grain. Later commitments focused on trimming the sugar in cereals marketed to children while nudging up nutrients like calcium and vitamin D.

It is worth keeping perspective here. These reformulations made a genuine difference to the grain and sugar content of a lot of familiar boxes, as reported by NBC News, but they did not turn a sweetened kids' cereal into a health food. What they did do is shift the baseline, so the average box on the shelf today tends to carry a little more whole grain and a little less sugar than its 1970s ancestor. Those incremental changes add up over the years, even if no single box ever announced them.

One of the least visible reformulations of the era happened inside cured meats. Bacon, hot dogs, and other cured products rely on sodium nitrite for their color, flavor, and preservation. In the 1970s, though, researchers grew concerned that nitrite could help form nitrosamines, compounds flagged as potential carcinogens, especially in bacon cooked at high heat.

The response was practical rather than sweeping. In 1978, as TIME later recounted, federal officials ordered a reduction in the nitrite levels used in bacon. Just as important, manufacturers began adding ascorbic acid or a close cousin, sodium erythorbate, to the cure, because those compounds interrupt the chemistry that forms nitrosamines in the first place. Nitrite stayed in the recipe, doing its familiar work, but the formulation around it was adjusted to make the finished product safer. It is a change almost no shopper would ever notice, and yet it reshaped how an entire category of food is made.

If the reformulation story has a recurring character, it is the food dye. Back in 1976, the FDA effectively pulled FD&C Red No. 2, then the most widely used red coloring in the country, after studies raised concerns it could not resolve. That single decision rippled across countless brightly colored products of the era and became one of the defining reformulations of the decade.

Nearly fifty years later, history is rhyming. In January 2025, the FDA revoked its authorization for FD&C Red No. 3 in food and ingested drugs, acting under a legal provision that bars color additives shown to cause cancer in animals. Manufacturers have until early 2027 to reformulate the foods that still use it.

The momentum did not stop there. Regulators have signaled a broader move away from petroleum-based synthetic dyes, and in 2025 the maker of Froot Loops agreed to remove artificial colors from its cereals by the end of 2027. The cereal bowl of 2028 may well look a little softer in color than the one you remember, for much the same reasons the shelves shifted back in 1976.

Step back from the individual products and a comforting truth emerges: the food supply is not frozen in time, and that is largely a good thing. The staples you grew up with have been nudged, tweaked, and occasionally overhauled, usually in response to new evidence, new rules, or your own preferences making themselves heard at the checkout. The trans fat is gone from the shortening, the questionable emulsifier is out of the sports drink, and the neon dye is on its way out of the cereal, all without the familiar packaging skipping a beat.

None of this means the modern version is automatically better or worse than the original, and it certainly does not mean you need to overhaul your cart. What it offers is context. The next time a favorite product tastes just slightly different than it did years ago, or a label quietly touts a new formula, you will have a sense of the machinery behind it. Knowing that the aisle is always quietly evolving can make the whole store feel a little more understandable, and a little more interesting to walk through. For a related look at getting the most from your grocery run, it is worth exploring how different stores stack up on nutrition for the money.