I bought this when our local recycling center quit taking #5 plastic tubs. I now make yogurt weekly in this yogurt maker. While I was a bit surprised at first that I had to warm the milk on the store first, I've gotten used to it. It works perfectly, every time. The feature I appreciate the most is that it cools the yogurt when it is done fermenting. I can set it and forget it, and if it finishes in the middle of the night, it is kept cool until morning.