Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Does its job very well

I'm extremely pleased with this purchase. At first I was confused about all the other yogurt makers on Amazon that are pricier. However, after reading some good reviews on this item, I decided to try it. I must say It turned out to be an excellent purchase. We now make yogurt every night. For the first try, we used the live cultures of commercial yogurt from safeway. We've been using it for about 1 month ever since and it has never failed to create excellent thick yogurt.