Are you allowed to tell us what it is? As a kid, I made sassafrass(sp) tea.
Its called "Maca" (Lepidium meyenii), its a tuber. Its kind of like a potato. Traditional Andean villagers have maintained it. The standard potato is the "irish potato", there are 9 other potato looking things that were grown in the new world that either were never brought back to europe or just never caught on.
Now dont imagine this as a butterscotch flavored "irish potato". The maca and the others are all together different creatures that just look like the potato that you and I are familiar with.
BTW, If the herbalists are correct, you should probably keep it away from adolescent males. They have enough hormone control problems the way it is.