Pour the milk into a saucepan and let it heat until it's nearly scalding or it is 80 degrees C. Take it off heat and pour into a bowl (not stainless steel) to cool completely.
When the milk is completely cooled, add the yoghurt. Make sure it has live ingredients inside it. Keep the yoghurt warm overnight.
The next morning it should look like a white firm custard. Strain it into a glass with a sieve or cheese cloth.
When your yoghurt has your desired consistency serve with sauces or fruit and enjoy.
Tip
Make sure you stick to the recipe because if you don't it could go wrong.