Instruct: Classify a review as either positive or negative.
Query: Turns the yogurt gray & metal tasting!

i should have known better ... since i don't make my kefir in any metal containers. the reviews got me again ... i should have followed my intuition.when i got the yogurt cheese out of the container the next day it was a perfect consistency BUT gray where it touched the metal screen and the taste was such a strong metal taste is was nauseating. the whey was gray and metal tasting as well. just a horrible experience. i don't understand the positive reviews since the product DOES NOT work for making, edible, yogurt cheese!