FAQ+

The Process

For the nerds

The How

Cocktail ice, generally, is made through a process called “directional freezing”. This method includes a couple of important processes happening simultaneously: freezing the water from the bottom up using specialized freezing equipment, and constantly circulating the water with a pump placed just beneath the surface. This pumping process prevents impurities and oxygen bubbles from settling, and because the water is only being frozen from the bottom up, the cloudy haziness you’ve come to expect with most ice isn’t able to form.

So what do you get using this specific freezing process and specialized equipment? Roughly three days after starting the freezing process, you get a 300lb ice block which is then removed from the machine and cut to size using a food-grade bandsaw. Easy peasy, right!? In theory, yes, but 300lbs is heavy, ice is slippery, and with chainsaws added to the mix, it’s an objectively uncomfortable process. Throw in the fact that Chris, IceSmith’s founder, has Raynaud Syndrome, and he’s literally (maybe) risking life and limb on a daily basis to bring ice to the masses. Sometimes following your passion is painful.

Before we get into melting rate examples and why we do what we do, here’s a quick overview of how this freezing process changes typical ice melting behavior:

Impact of Physical Properties + Process of Directional Freezing on Ice’s Rate of Melting

  • Thermal Mass and Density

    • Cocktail Ice: Greater thermal mass means ice with higher density, requiring more energy (aka heat) to melt the ice.

    • Regular Ice: Lower density due to gas bubbles and impurities (aka haziness and cloudiness), resulting in reduced thermal mass and increased melting times.

  • Structural Integrity

    • Cocktail Ice: Fewer/zero air bubbles and impurities lead to a more uniform and robust structure, reducing surface area and slowing down melting.

    • Regular Ice: Air bubbles and impurities create weak points and ultimately increase the ice’s surface area, ensuring quicker melting.

Melting Rate Examples

Below are examples of the melting rates of different types of ice cubes, with all ice containing identical volumes and tests being performed in the same conditions. For reference and consistency, these scenarios mention “Cocktail Ice Cube” and are referring to 2"x2" cocktail ice cubes cut from large ice blocks.

In our first example, we’ll use two cubes of the same size and surface area.

Cocktail Ice Cube vs King cube from a silicone mold:

Comparison table showing attributes of King Cube and Cocktail Ice Cube, with both having 8 cups volume, 24 square inch surface area, but different melting times and rates. King Cube melts in 60 minutes at baseline, while Cocktail Ice Cube melts in 75 minutes, 25% slower.

These two types of ice differ by 25%, not because cocktail ice contains different ingredients, but because it lacks what you’d typically find in ice made behind the bar: oxygen bubbles and impurities that come from rapid freezing. Theoretically, this could lead to a customer's drink also being finished approximately 25% faster due to dilution being 25% slower.

In our next example, we’ll compare cocktail ice to regular, smaller ice cubes made in a normal freezer. As mentioned before, all ice in these examples contains identical volumes, and tests are performed under the same conditions:

Cocktail Ice Cube vs Regular sized ice cubes made in a freezer/ice machine:

Comparison table of regular ice cubes and cocktail ice cubes, including attributes such as volume, surface area, melting time, and melting rate.

In this example, the cocktail ice is melting 100% slower than regular ice cubes, meaning, for one thing, a far less watered down drink for the consumer and either a faster turnover (FOH managers rejoice!) or, like we also mentioned previously, another drink ordered more quickly.


By now, it should be clear (!) that cocktail ice is more than just frozen water. It’s an integral part of the drinking experience. Whether you run a restaurant, bar, or event space, cocktail ice from IceSmiths will help you deliver a more enjoyable, less diluted, great looking beverage. We hope these examples and explanations shed light on why we’re pragmatically passionate about ice…even when it involves lugging around 300 lb blocks and working in bone-chilling conditions. If you’re ready to learn more about us, you’d like to request a quote/sample, or you’d simply like to introduce yourself, we’d love to hear from you. Sláinte!

- Erin & Chris

clear ice

full hearts

can't lose

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