HOW IT WORKs
like a lake in winter...
In a regular ice cube tray, the ice freezes from all sides toward the center of the cube, trapping a cloud of dissolved air and other impurities in the center. The ClearlyFrozen ice cube tray, however, works just like a lake in the wintertime, by freezing from the top down. The "directional freezing" process pushes the cloud to the bottom of the cube and through the hole at the bottom of the tray, leaving you with ice as crystal-clear as your glass.
3 steps to clear cubes
PARTIALLY FILL — Put the plastic liner into the foam box and add about 1" of water
TOP OFF — Scrunch up and insert the blue tray and top off to the rim
FREEZE - Like baking a cake - pull the cubes and store them in a bag or bin when they are "done." Depends on your freezer - try 15 hours and adjust accordingly.
LOOK AT THE DIFFERENCE!
tricks of the trade
Before you place ClearlyFrozen ice in a drink, leave it out at room temperature for a few minutes to help prevent cracking in your glass.
For clearest results, remove the ClearlyFrozen assembly from the freezer before the ice has quite frozen to the bottom of the blue tray, and there is still unfrozen water below. The ice will be a bit uneven on the bottom, but clear as glass. It might take a couple tries to find out how fast your freezer freezes the ice.
For a different visual effect, you can let the water freeze further down and get cubes with tiny clear bubbles at the bottom, like a splash of frozen club soda.
Storing your cubes in a brown paper bag will help keep them from sticking to each other.
If freezing more than one tray at a time, side to side is fine, but don't stack them - that interferes with the "directional freezing" in the lower trays.