Prescribed For Life Ace K Sweetener | Acesulfame Potassium Powder | 200x Sweeter Than Sugar Zero Calorie Sweetener | Kosher, Semi Natural, Granular Sweetener (12 oz / 340 g)

It's exactly as described & really is 200 times as sweet as sugar. It does have a bitter aftertaste when used alone, but works great when used in combination with other natural or artificial sweeteners. You only need to use a tiny bit, so this bag will last a long time.

This is a very effective sweetener. However, the amount you need to sweeten a cup of tea or coffee is vanishingly small, and it is way too easy to use too much. It tastes terrible if you put too much in, and the aftertaste from too much can linger for an annoyingly long time, but if you get just the right concentration, it's a very good alternative to sugar. I guess that's why you see it listed as an ingredient in so many mainstream diet sodas.

This is good if Ace-k is what you need. If you’re shopping for something that tastes like sugar, you might find pure aspartame a better choice. I deducted one star for taste and another for country of origin (China). I’m not a fan of digesting manufactured foods from other countries. This is definitely concentrated and likely pure as stated. A small amount on the tip of a teaspoon is enough make your coffee as sweet as 4 sugar packets. It’s definitely more economical than packaged sweeteners, which have fillers and other sweeteners mixed in. That said, the pure Ace-k may be too bitter without cutting it with aspartame. I’ve been on a quest to find a viable sweetener that does not have a bitter aftertaste. I tried both name brand sweeteners, and the underlying substances where possible. The list includes Splenda, Equal, Nutrasweet, saccharin, Monk Fruit, Stevia, swerve, erythritol, aspartame and acesulfame potassium (“Ace-k”) Many of the name brands have fillers and flavors added to them. In the case of some retail packaged sweeteners, they contain a mixture of Ace-k, aspartame and dextrose. The closest I could get to real sugar was swerve and Equal. Swerve was very expensive and did numbers to my stomach. Equal was better but it still had a bitter aftertaste. Lesser than the others, but it was still there. I decided to try the two sweeteners in Equal separately. The Ace-k was very bitter and worse than Equal. The aspartame turned out to be almost identical to sugar with zero bitterness at all.

Tasted sweet with the tiniest bit like 1/16 of a teaspoon tried a little tiny bit more and it tasted bitter and like a chemical very bitter

My go-to with this is to dissolve it in water, then mix the dilute AceK half and half with liquid sucralose and put it in a dropper bottle. This is an extremely strong sweetener, so doing it this way is helpful to give you the right amount of control over how much sweetness you add. Add more water to weaken it if you find you need to make finer adjustments for level of sweetness. It's the best sweetening with the least aftertaste I have yet discovered. Buying it in this form is also super cost effective; one bag of this lasts me at least six months when I prepare it this way, and I use it multiple times a day every day. The liquid sucralose is also very affordable. It's way cheaper and produces a lot less waste than buying packets of sweetener.