Instruct: Classify Amazon reviews into positive or negative sentiment
Query: NOT SO SURE ABOUT ITS QUALITY

I have been using American Ginseng over 15+ years. I am wondering why those slices are 2 times bigger than average. American Ginseng should be harvested with 3-4 years if you do the research on the internet. Anyway, I chewed pieces of them and they were too flat (tasteless) for me. I did not feel the bitter and sweet on my throat or on my tongue after using it. I am not so sure about its quality.By the way, I saw some other reviews that other customers who gave 4 or 5 stars are basically not reviewing the quality of this products, they made comments on the shipping. I am really scratching my head what the purpose is?????????