User blog comment:Jones143/New Sims 3 World!!/@comment-84.26.27.241-20110805171629/@comment-1966471-20110805191218

that's the new "Fountain of Youth" object. A Sims makes a wish and then drinks the water. If succesful they will never age (a similar effect as the Age Freeze potion in Generations). No word on the negative side effects yet. I'm guessing that it'll age them up (possibly to Elder). A reverse of the Young Again Potion. We'll know more soon.