Not only this, but the levels of herbicides+pesticides in grocery-store brand teas is apparently terrible. I've had a friend who worked at a chemical testing l

Not only this, but the levels of herbicides+pesticides in grocery-store brand teas is apparently terrible. I've had a friend who worked at a chemical testing lab for a grocery chain who flat out stopped drinking tea - even organic certified - after running the tests for the client. Every single brand tested positive for quantities a trained biochemist wasn't comfortable with. I can't imagine how bad concentrated extracts are.