What is Directional Freezing?

Directional freezing helps make clear ice by controlling where freezing begins and how it moves through the water. In an insulated container with an exposed top, ice forms mainly from the top downward. Air and dissolved material are pushed toward the water that freezes last, where cloudiness can collect.

Camper English documented this approach on Alcademics. Read his explanation of directional freezing for the original background.

To understand the cloudy centers found in ordinary trays, see why traditional ice cubes turn cloudy.

Choose clear cubes or spheres

The Glacio Clear Ice Cube Duo makes two 2-inch cubes. The Clear Ice Sphere Duo makes 2.5-inch spheres. Choose the shape you enjoy serving and check that it fits your glass.

Using your Glacio Clear Sphere/Cube Duo

Our illustrated Duo instructions show the fill marker, mold alignment and release steps. Fill to the bottom of the vertical marker inside the container, align the two molds, and lower them gently into the water.

The recommended freezing time is 24-30 hours; avoid exceeding 30 hours for best results. Wash before use. The silicone molds are dishwasher safe, but the filling container should be washed by hand.

Keep the instructions handy for your first batch, especially when filling the container and removing the molds.