A very good and potent stevia extract. In tea or coffee I haven't noticed any of the herbal stevia taste/bitter aftertaste. Drinks are pretty much the limit of how you can use it, it wouldn't work in most baked goods (but would probably work in a small amount in pudding or jelly). Recommended not to use to make something very very sweet or to take many times a day, it can give diarrhea. Looks like a small bottle but will take forever to get through.
This is my go-to stevia ... I have never once had any type of bitter aftertaste from using it, and a few drops go a long way! This is the plain stevia flavor which we use mostly in tea or coffee instead of sugar. One bottle lasts two adults about 2 months with daily use ... of course this is very individualized, but I like my coffee sweet and my husband wants it barely sweetened. We will continue to use this brand as long as it is available!