Pour the distilled water into a pan. Boil the water.
Step2
Let the water cool.
Step3
Boil it again.
Step4
Fill your ice tray(s) and put into the freezer.
Tips & Warnings
You can use plain old tap water for this, but the results just won't be the same. Distilled water has no minerals; minerals are one of the things that cause cloudy ice cubes.
Don't omit the second boil. Boiling gets rid of excess air in the water; air is the other thing that causes cloudy ice cubes.