Acesulfame potassium, also known as acesulfame K or ace K,  is a calorie-free artificial sweetener, and marketed under the trade names Sunett and Sweet One.

Acesulfame K is 180-200 times sweeter than sucrose (table sugar), as sweet as aspartame, about half as sweet as saccharin, and one-quarter as sweet as sucralose. Like saccharin, it has a slightly bitter aftertaste, especially at high concentrations.

Although the United States Food and Drug Administration (USFDA) has approved ace-k for use as general-purpose sweetening agent, there is concern as to its safety and some research shows acesulfame potassium may be carcinogenic.

Meal Genius does not endorse artificial sweeteners of any kind.

References

Clauß K., Jensen H. (1973). "Oxathiazinone Dioxides - A New Group of Sweetening Agents". Angewandte Chemie International Edition 12 (11): 869-876. doi:10.1002/anie.197308691.?