Back in January there was a thread which wandered to this subject. I put in my two cents. Before the links, let me say the book says my suggestion is full of it.
Two links - first the original thread and second a New York Times piece referencing the book.
BIL. SIL have been making clear ice balls a while, some gadgets. plus a working freezer, our Samsung is still wacky, friday appliance repair tech is coming…