This is what I have been using for 6 months now. It is convienient, relatively inexpensive and you don't need that much. One adult single yogurt can make one whole gallon of yogurt. I've used Stonyfield plain, vanilla and just about all of the baby flavors. I always use the whole milk kind. If you use a flavored, it does impart a slight flavor to the whole batch, but sometimes we like it that way! I don't like plain yogurt, so I always add a sweetener (rapadura or sucanat). I've heard honey doesn't work, but have never tried...