Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Won't buy again

I'm not a vegetarian and consume most of my essential amino acids via meat... my wife doesn't eat very much meat/chicken and usually falls far short of her daily needs. My mission is to find a protein powder that has what she needs, tastes good to her, and isn't full of fat and sugar.Her opinion is...<drum roll>... This product has little or no peanut butter flavor and tastes chalky. She doesn't like it and so my search continues.