Saccharin vs stevia: which sweetener is worth it?
A coffee with saccharin leaves a metallic aftertaste; with stevia, a licorice flavor that reminds many people of 90s chewing gum. The food industry has spent decades selling these alternatives as the miracle solution for diabetes and weight control, but the data and consumer experience paint a more complex picture.
Saccharin's aftertaste: 300 times sweeter but with a lingering taste
Saccharin is between 300 and 500 times sweeter than sugar, but its bitter, metallic aftertaste is noticeable, especially at high concentrations and in hot drinks like black coffee. Those who take it with milk or in machine-brewed coffee notice it less, but it doesn't disappear. Some users say the taste comes back hours later, even in foods where they wouldn't expect to find it, like sweet-and-sour pickles.
Stevia: the paradox of ultra-processed "natural"
Stevia is marketed as natural, but the final product is usually so processed that little of the original plant remains. Its licorice aftertaste is characteristic and, for many, unpleasant. What's more, commercial preparations often contain a ridiculous percentage of stevia —0.18% has been documented in one brand—, along with acidity regulators, preservatives and, in some cases, fructose, which undermines any claim to purity.
Beyond taste: health effects
The debate goes beyond flavor. Sucralose, found in drinks like Coca-Cola Zero, has been flagged for altering gut microbiota, an effect that never appears in the advertising. Meanwhile, erythritol is gaining fans as an alternative with no aftertaste, although its price is significantly higher than sugar's.
In short, no sweetener manages to mimic sugar's profile. The best option, according to a growing number of consumers, is to skip all of them and train the palate to enjoy less sweet flavors.
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