Unfortunately, they are usually cancer causing, chemical ridden sweeteners, such as Equal or Sweet and Low or other artificial sweeteners. I would much rather see them use something more natural, organic Stevia or even Agave come to mind.
That’s a good question. I avoid artificial sweeteners like those for many reasons but mainly because they cause my migraines. So I always avoid those types of desserts because I never know what they add to them. I guess I could ask at the restaurants if I am thinking of ordering anything like that.