• jak@sopuli.xyz
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      6 months ago

      It’s actually too cold for salt to be reliable. Water fully saturated with salt freezes at ~-21/-6(c/f), so if it’s predictably getting colder than that, it’s a bad idea to use salt.

      Edit: They add beet juice when it’s really cold, but otherwise, it looks like they use salt :(

      • RedAggroBest@lemmy.world
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        6 months ago

        It’s salt but it’s not sodium cloride. It’s usually calcium cloride. That’s usually good to -30/-34 F/C.