For the wasabi cucumber ice cream, remove the cucumber ends, cut the cucumber in half and remove the seeds with the help of a small spoon.
Then finely blend all ingredients in a tower blender.
Pass through a fine sieve, season to taste and freeze in an ice cream maker.
For the buttermilk shake, froth all ingredients with a hand blender.
Pour into pre-chilled glasses and add wasabi-cucumber ice cream.