This is the answer. Directional freezing creates clear ice.
Comment on The end of civilization costs $5
blackbelt352@lemmy.world 14 hours agoNo. You need to freeze in in an insulated container with only one side exposed so it all freezes in 1 direction. Impurities get pushed to the opposite side and you are left with clear ice.
heatermcteets@lemmy.world 12 hours ago
dream_weasel@sh.itjust.works 9 hours ago
There are so many dumb as shit comments in this thread about agitating and boiling and purifying water and you’ve got the actual answer, thank you.