Does salt actually keep evil away?
Thats a very ancient idea that lots of different cultures believe ie, sprinkle an unbroken circle of salt around your bed and it keeps nightmares away. I do it for my kids, and it works, becuase they believe it works.
No, but my friend thinks that salt makes food hotter. He's not too smart.
How could that even remotely work?
My great grandmother use to throw salt over her shoulder. Said I was for good luck or to get rid of something bad.
No. Salt enhances flavor and helps sterilize woulds.