I never got any yogurts to work using the thermos method. What I did was bought a small yogurt maker from www.amazon.com It was under $15 and saves me a ton of money by being able to make my own. I also feel homade yogurt without the addatives, sweetners and such is better for my kids as well The carb countdown really works well in yogurt. It started to thicken up on me right away and one time I almost had yogurt cheese.

Here is the one I got. It looks like the sell on it is over, but it's still under $20

http://www.amazon.com/exec/obidos/t...itchen&n=284507

I would recomend if you can to buy a glass mason jar with a wide mouth to use in it. That way you can have a tight fitting lid and also be able tot store in glas sinstead of plastic. It's the wrong time of year for canning so I just use the plastic container that comes with the maker and have no problem. I am just very careful nto to tip it or drop it