Place partially thawed strawberries, xyilitol and banana pieces in blender with coconutmilk. Blend until thick and slushy.
Remove and transfer to a bowl.
Wash the blender and add the frozen yogurt, flavouring. Blend until smooth.
Pour half of the strawberry and yogurt mixture into each glass. You want to create a half and half mixture. Use care and pour both mixtures at the same time. Top mixture with a whole strawberry and insert a straw for sipping.