Mix 1 tin of nestle milk with 1 tin of boiling water (mix together well)
Add two tins of cold water (mix well)
Add ½ glass yoghurt (mix well)
Pour into glasses. Take bubbles off top
Put glasses into large sauce pan
Pour in ⅔ of a kettle boiling water
Cover with tea towel and place lid ???
Leave for 6 hours
Put into fridge when cool