Homemade Yogurt

I tried making yogurt on Friday afternoon and the result is pretty good.

Ingredients:
1L Full Cream Milk (I used organic UHT milk)
2-3 tbsp the best plain yogurt you can find in the supermarket (I used Paul's plain set natural yogurt)

Method:
1. Preheat oven to about 100 deg C. Turn off oven when done.
2. Heat up milk in saucepan/pot over medium heat.
3. Stir, and watch it; it's ready when the milk is hot to the touch but not boiling.
4. Stir in the yogurt, cover the pot and place in the oven for 8-12 hours. The longer the duration, the more sour it gets.
Alternatively, you can use a thermos flask to store the contents after heating up, and store in a warm place for the same duration.
5. Taste, and when satisfied, store in the fridge. Consume within the week or as soon as you can.