Halve the kiwi fruit and scoop out the flesh with a teaspoon. Quarter the pears and slice out the cores. Chop into chunks. Cut the cucumber into small pieces.
Tip everything into the blender. Add the cashews and a cupful of ice. Pour in 250ml ice-cold water and whizz till smooth. Add more water to reach your desired consistency.
A nice long soak
If you have time, soak the cashews overnight in a bowl of cold water. Drain and rinse them, then use in the smoothie.