Here is a very simple method to make your yogurt. This Yogotherm as the name suggests is a thermos.

Simply bring up to 2 litre of milk to around 180 degrees (to kill competing bacteria) cool it down to 115, insert a pack of Yogotherm culture, stir, and insert this in the yogotherm container. Now put the lids on both containers, and then incubate this for 6 to 8 hours. You are done.

If you wish a thicker consistency just add some skim milk powder in the beginning. To flavour add some fruit, or make bottom fruit yogurt.