Pot liquor (or "pot likker" according to
How To Speak Southern) is the term used in
the American South for the liquid left in a cooking
pot after greens have cooked for some time (and the South doesn't see
crispness as an asset in cooked plants). Southerners often drink the liquid or sop it up with
biscuits rather than
waste it, even before research showed how many
nutrients leak from the vegetables into the water around them.
Sources: Steve Mitchell's How To Speak Southern, 1976, and growing up in the Carolinas.