Recently I posted a method of making perfectly clear ice balls using an insulated mug, which was sent in from Alcademics readers.
The physics of the thing made perfect sense but I hadn't actually tried it myself at the time. This post is just to say that I use this method now and make nice round ice. Lots and lots of it.
The ice in the picture above isn't cloudy; just some of it is frosty on the outside.
I use this stainless steel tumbler a small ice ball mold that it sits in. Easy.
An index of all the ice experiments on Alcademics is here.
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