Acesulfame Potassium (Acesulfame K or Ace-K) is a calorie-free, high-intensity artificial sweetener. It is about 200 times sweeter than sucrose (table sugar) and is widely used in food, beverages, oral care products, and pharmaceuticals. Acesulfame K is heat-stable, making it suitable for baking and cooking, and is often blended with other sweeteners like aspartame or sucralose to enhance taste profiles.