"Pot liquor" refers to the flavorful liquid that remains in the pot after cooking vegetables or other ingredients in water. It is often used to make soups or sauces as it contains the essence and nutrients of the cooked food. Full definition
Sometimes it is spelled as pot liquor soup, potlikker, or — the way I spell it — pot likker. (addapinch.com)
What made it special is that she'd drop an egg into it and it'd poach in all the wonderful bean pot liquor. (orangette.net)
«With long, slow simmering, like a pot of chili gets,» Ellis wrote in his column on chili, «the connective tissue in beef shank virtually dissolves and makes a rich, beefy pot liquor that is the very essence of a good pot of chili.» (fieryfoodscentral.com)