Actually it is super super easy.
1 mango, 1 apple, 1 rose apple (jambu air), 1 guava, yoghurt (I added in 3 table spoon)
Blend all the above fruits into super watery smooth and add in yoghurt. And then freeze into ice cube :D Sushi loves it a lot! *I also likes to eat it*
Oh of course you can substitute with any kind of fruits, even only one kind. It is an excellent treat for a hot day!
The above is my first batch of Yoghurt Sherbet. The one that Sushi had the other day is second batch. The process is same, just that I used Mango, Fuji Apple, Pear and Guava. Sure yumm yumm!