[floren]

Salt's way cheaper than antifreeze, and I'd be a lot happier about getting a little stray salt in my ice cream than getting a little stray ethylene glycol (with bittering agents, since 2010).

[foobarian]

I suppose I could store the salt water solution instead of throwing it away. Assuming I made ice cream often this would be acceptably frugal for me.

[bobthepanda]

Also, if you really want to recover the salt, you’d just have to boil away the water.

Alternatively, pickling is a perfectly good use of brine used for frugal purposes (extending the shelf life of produce, eggs, and what have you)

[AngryData]

Boiling is quick and convenient, but just evaporating the water out with ambient air is all but free.

[robotresearcher]

> Also, if you really want to recover the salt, you’d just have to boil away the water.

This is probably the point the poster was making: this requires a lot of energy. There's a lot of NaCl in the world, but getting it out of solution is expensive.

[bobthepanda]

If that’s a major concern, you can literally leave it in the sun like the other person suggested.

[annoyingnoob]

You could use propylene glycol that is Generally Recognized As Safe.

[martyvis]

What's in the blue liquid in those ice cream making bowls that is normally sealed but sometimes people report it leaking. The manufacturers say it is nontoxic.

[hammock]

It’s propylene glycol. The same stuff they fill “ice packs” with. And it’s also the thickening agent in coffee syrups. Supposedly food safe. I wouldn’t season my food with it though

[schrodinger]

It’s also what’s used in vape cartridges.