You can make a clear block of ice using an insulated cooler with the Directional Freezing method. You can also use this method to freeze objects inside of ice blocks including freezing a full-sized bottle inside an ice block. If you are able to add an aquarium pump to the mix, you can make clear ice from the bottom up without any cloudy parts at the end; a method that mimics how professional ice block machines work. (All of the many, many ice experiments posts are located here in the Index of Ice Experiments.) Today we'll talk about how to...
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This technique to freeze a bottle inside an ice block uses directional freezing (freezing inside an insulated cooler with the top off so that it only freezes from the top-down), with the bottle raised high so that it's in the clear part of the ice block.
Another method of making super clear ice spheres using different molds in a cooler.
I did a podcast interview with Brian of Bartender Journey and it's now online. Thirty glorious minutes of me talking about things I often write about. But out loud! Check it out here. I come in at around the six minute point.
There is a new clear ice ball maker on the market, so I gave it a test run.
The short answer is: Poke holes in the tray and set it on a riser at the bottom of an insulated cooler. The long answer? Read along.
Commercial ice machines like the Clinebell freeze blocks of clear ice by freezing from a cold plate on the bottom, while a water pump near the surface keeps water circulating (thus preventing ice from forming on the surface). An Alcademics reader wrote me to tell me about a method he developed that sort of combines these two methods for the home user, producing a mini-Clinebell-type block.
I tested a method of making clear ice balls at home. It works just fine.