Instruct: Classify a given review into positive or negative sentiment.
Query: Another good product from Optimum Nutrition

While it doesn't quite taste or mix as well (Blender recommended for this one) as Optimum Nutrition's non 100% natural line, it does provide a high quality protein shake. If you are concerned about artificial sweeteners then this is the product for you. If you could care less about artificial sweeteners and want something that tastes just a little bit better, I'd recommend the regular double rich chocolate.