My friend brews it as a tea. (I know, not tea but tisane.)
She got it from a friend's parents who grew up drinking it and it grows well and plentiful in their backyard (California). They are not of any cultural heritage, are many generation American, and are not from the South.
She says it is slightly sweet. I did not have a chance to taste it yet. Do you know what it is? The photos are of the dried plant.