Acesulfame Potassium (Acesulfame-K) is a calorie-free sugar substitute that is over 200 times sweeter than sucrose. It is similar in sweetness to aspartame. When pure, it is a white crystalline powder. It is known to be highly stable and can be stored for at least 10 years without showing signs of decomposition or absorption of moisture from the air. Unlike other sweeteners, it exhibits great stability in high temperatures up to 225℃, yet it conveniently dissolves in water at room temperature.
In 1967, Karl Clauss and Harald Jensen discovered a compound that is very similar to acesulfame potassium. According to documented notes, Clauss did not wash his hands properly and when he licked his fingers to grab a piece of paper, he discovered a pleasantly sweet flavour.