I use the Pau D'arco by Source Naturals. I'm on my second bottle of it, the two have slightly different colors, but they both smell pretty strong, almost sweet. I bought the tea by Altiva, and it is also very strong in scent and taste. I am hopeful that it will help to keep my upper digestive tract clean. Like you, I boil it for about 20 minutes, then I let it steep for another hour or two. Then I sweeten it with a little stevia, and drink. Good stuff.