Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Thorough, researched herbal analyses

The author of this simple yet effective book on herbal teas wins your respect because she picks out her favorite teas and does her homework on them. I only wish there were an updated version of this book as research information has changed somewhat and new information is available. Noteworthy and also respectable is the inclusion of important cautions about any herbal teas that might not be safe for persons with various medical conditions. This is not a scientific book as we think of it. It's written for the lay person and based on some research the author did, absent scientific writing standards. All in all, it's one of the few good books out there on teas.