I know, I know, you're saying, here it comes, the wonder juice of the week. What's this one going to do? Flood my immune system with flavanoids? Saturate me with vitamin C? Keep me from coming down with Alzheimer's? Help prevent suburban sprawl?

The answer is yes, yes, yes, and maybe. Black currant berries are bursting with nutrients: twice the antioxidants of blueberries; four times more vitamin C than oranges; twice as much potassium as bananas. And the compounds that give black currants their deep purple pigment have the potential to protect brain cells and prevent Alzheimer's, according to several recent studies.