I recently bought a yogurt maker and have started making my own yogurts. I use the following recipe which I found on the net before buying the new appliance.
Homemade yogurts have a taste and texture that make them absolutely perfect for breakfast, eaten as they are or poured on cereal.
Take one plain yogurt you like and put it in a glass bowl. Whisk it. Add one tbsp of powdered milk and whisk again. Gradually pour one liter (approximately 2 cups) of semi-skimmed (organic) milk while whisking.
Pour the mixture into the glass containers. Put in the yogurt maker and set on 8 hours. When they are ready, put on the lids and store in the fridge for half a day before you eat them.