UNDATED - A pinch of salt could keep your milk fresh longer.
You need to add the salt when you first buy your milk, says Bruce Lubin, coauthor of "Who Knew?"
Salt is a natural preservative that slows the growth of bacteria.
Lubin says the taste won't be affected, and you could double your milk's shelf life.
And by the way, the same goes for that reheated or burnt, bitter coffee. A dash of salt will take the edge off.
Follow WTOP on Twitter.
(Copyright 2011 by WTOP. All Rights Reserved.)
Acupuncture is weird enough on people - but on a turtle?
Can you guess why this pigeon is the world's most expensive?
Check out the most expensive home for sale in the U.S. (Video)
Something unusual: Acupuncture for ailing sea turtles. (Photos)