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Experiments in Making Cocktail Ice

alcademics.com

11–20 of 75 posts

Re: Experiments in Making Cocktail Ice

#11
post #3

I always thought the key to getting clear ice was to boil the water first so the oxygen goes out of solution.

That isn’t the issue. The problem is an ice shell initially forms, then the water inside the shell needs to expand as it freezes but it has no where to expand. This creates internal stress and micro fractures and the resulting ice crackles due to internal stress. Clear ice requires a directional freeze.

Re: Experiments in Making Cocktail Ice

#12

Former bartender here. Having nice cocktail ice chunks at home isn't as complex as this might make it seem. No need for a clunky box in your freezer or costly gizmos. I keep a travel-sized coffee thermos in my freezer with about 2-3 inches of water at the bottom. Takes 18-24 hours to create one chunk. If you time it right, 90% of the water freezes, and the water impurities pool at the bottom – pop out the frozen chun…

>If you time it right, 90% of the water freezes, and the water impurities pool at the bottom And even if you don't, worst case you end up with a cloudy end on your clear ice that can be easily removed by rubbing it on an aluminum sheet pan

I'm not sure it will be so easy to get the ice out if you let it freeze solid.

Re: Experiments in Making Cocktail Ice

#13
post #3

I always thought the key to getting clear ice was to boil the water first so the oxygen goes out of solution.

Interestingly freezing hot or boiled water can be quicker due to the Mpemba effect. https://en.wikipedia.org/wiki/Mpemba_effect

Faster freezing is bad when you're trying to make clear ice. It's also bad to put hot water in your freezer - you're bringing the temperature of everything else up and then it has to refreeze. That'll damage the quality of whatever food is in the freezer.

Re: Experiments in Making Cocktail Ice

#14
is it me or pretty much all of those icecubes are infested with air bubbles?

i'd think the "cocktail ice" criteria would be to be 100% clear. I make my own ice, usually in the winter, because it's fun when it's -20 outside and i stock pile it in a deep freezer for the remainder of the year.

process: + fill a small cooler almost to the top with water + leave the lid open and leave the cooler outside over night, or 2 nights, depends on the size + *key*: you want to remove the ice from the cooler before it freezes all the way through, ideally you want ~2 inches of water left on the bottom unfrozen. ice freezes from top to bottom, so all the air and impurities keep getting pushed down. this top layer will pretty much be perfect, you may have to wash off the top layer due to frost/snow that have accumulated over night. +. take your new slap of ice and score it with a bread cutting serrated knife, tap the knife with a wooden spoon and you'll have a perfect cut of a of a huge chuck of ice. keep serrating/hitting into smaller chunks.

Re: Experiments in Making Cocktail Ice

#15

Former bartender here. Having nice cocktail ice chunks at home isn't as complex as this might make it seem. No need for a clunky box in your freezer or costly gizmos. I keep a travel-sized coffee thermos in my freezer with about 2-3 inches of water at the bottom. Takes 18-24 hours to create one chunk. If you time it right, 90% of the water freezes, and the water impurities pool at the bottom – pop out the frozen chun…

Have a particular one to recommend?

Re: Experiments in Making Cocktail Ice

#16

Somewhat related interesting fact, the UK ice market is dominated by one player who has brought out almost all other manufacturers, The Ice Co. This is a good article from a couple of years ago about them: https://www.theguardian.com/news/2020/dec/10/super-cubes-ins... They have created a few "innovative" products, such as larger "clearer" ice cubes for cocktails - related to TFA - by spraying water into super cooled…

Sounds like similar tech to the Kold-Draft machines in the US market.[1] During the height of the pandemic one of my neighborhood bars was selling bags of their cubes to stay afloat. Only good thing to come out of covid.

1: https://kold-draft.com/pages/why-kold-draft#technology

Re: Experiments in Making Cocktail Ice

#17

Former bartender here. Having nice cocktail ice chunks at home isn't as complex as this might make it seem. No need for a clunky box in your freezer or costly gizmos. I keep a travel-sized coffee thermos in my freezer with about 2-3 inches of water at the bottom. Takes 18-24 hours to create one chunk. If you time it right, 90% of the water freezes, and the water impurities pool at the bottom – pop out the frozen chun…

Water expands when it freezes, in my head thermos is an extremely rigid structure, how do you stop it from rapturing?

Re: Experiments in Making Cocktail Ice

#18
In case anyone wants an easy way to make nice, clear ice fairly easy in a home setting.

https://www.wintersmiths.com/ - These guys make gadgets that you can put in your freezer and get very clear ice. Melt very well/evenly.

You can also find details of their latest machine on kickstarter, which is a work in progress.

edit: I have bought most of their products over the years, starting with their first ice-baller. And supported the phantom kickstarter, and their latest one.

Re: Experiments in Making Cocktail Ice

#19

Former bartender here. Having nice cocktail ice chunks at home isn't as complex as this might make it seem. No need for a clunky box in your freezer or costly gizmos. I keep a travel-sized coffee thermos in my freezer with about 2-3 inches of water at the bottom. Takes 18-24 hours to create one chunk. If you time it right, 90% of the water freezes, and the water impurities pool at the bottom – pop out the frozen chun…

Water expands when it freezes, in my head thermos is an extremely rigid structure, how do you stop it from rapturing?

Simply don't fill it to the brim, allowing room for expansion.

Re: Experiments in Making Cocktail Ice

#20

Former bartender here. Having nice cocktail ice chunks at home isn't as complex as this might make it seem. No need for a clunky box in your freezer or costly gizmos. I keep a travel-sized coffee thermos in my freezer with about 2-3 inches of water at the bottom. Takes 18-24 hours to create one chunk. If you time it right, 90% of the water freezes, and the water impurities pool at the bottom – pop out the frozen chun…

Water expands when it freezes, in my head thermos is an extremely rigid structure, how do you stop it from rapturing?

The thermos is mostly full of compressible air
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