I've always been puzzled by what qualifies as organic milk. Now it looks like the kind folks at NPR have made an attempt to sort it all out for us.
"A proposed USDA rule would require cows that produce milk labeled as organic to spend plenty of time out on pasture land, grazing on grass," the article states. And furthermore "research suggests cows that eat grass, clover and alfalfa produce milk higher in healthy omega-3 fatty acids than cows that eat concentrated feed made of corn."
http://www.npr.org/templates/story/story.php?storyId=98403633
Do you tend to buy organic? Do you notice a difference?