Blitz everything together, except the muesli and kiwi fruit, in a high speed blender for 20-30 seconds. You may need longer in an ordinary blender.
Pour into 4 bowls.
Scatter ½ tbsp of muesli on top of the smoothie along one side of each bowl.
Halve the kiwi fruit slices and arrange along the centre of the bowls.
Notes
You can omit the muesli and kiwi fruit and drink this from a glass.The smoothie gets even better kept in the fridge for 24 hrs or so and acquires quite a fizz.Please note: calories and other nutritional information are per serving. They're approximate and will depend on serving size and exact ingredients used.