Almost foolproof

I've never made yogurt myself and I've bought this unit because one fact can make 1 liter of yogurt in one go. As a technology-affine person I bought the same yogurt bacteria in powder form (see "Jean Pütz" or "Spinning Wheel"), powdered milk and inulin, so that nothing is missing.

To determine that this is completely unnecessary.

The only two things that are needed as "extras" are patience and an iron will. The patience you need, because the process until the yogurt is finally finished, may take 12 to 18 hours. Or longer. And the strong will be needed so as not to look before permanently into the pot. Is best - in my experience: stuck after preparing the device into the socket and ignore.

You can take the device to the following, very simple way, yogurt manufacture (and inexpensive to):

You buy a small cup "BIO yoghurt". Which is found in the grocery store by the fact that you look at the yoghurt pots and no words as "ultra heat treated", "durable" etc. will and the cup really just yogurt contains (no sugar, no other ingredients). Most is still "probiotic" or something on it, then you have made the right choice. To try I inexpensive organic yogurt made of net (3, x% fat).
Plus 1 liter of durable, low-fat (1.5%) milk. The yogurt comes in the cup of the device, then the milk it (not the refrigerator), mix with a whisk, put lid on unit, and wait.

After 18 hours, I had yogurt, which was after a stirring without flakes and creamy enough. Although a little smoother than we thought, but it was yogurt.

So has played no role that organic yogurt and milk had different fat contents.

For the next round of yogurt you can do without the above organic yogurt and takes its own, previously prepared (approximately 150 to 200 ml) for "seeding".