Demand is booming for organic milk from cows that eat only grass. But convincing farmers to feed cows only grass is tricky. WSJ's Sarah Nassauer reports on Lunch Break with Tanya Rivero.

Subscribe to the WSJ channel here:
http://bit.ly/14Q81Xy'>http://bit.ly/14Q81Xy

Visit the WSJ channel for more video:
   / wsjdigitalnetwork  
More from the Wall Street Journal:
Visit WSJ.com: http://online.wsj.com/homepage

Follow WSJ on Facebook:
  / wsjlive  
Follow WSJ on Google+: https://plus.google.com/+wsj/posts
Follow WSJ on Twitter:   / wsjlive  
Follow WSJ on Instagram:   / wsj  
Follow WSJ on Pinterest:   / wsj  
Follow WSJ on Tumblr: http://www.tumblr.com/tagged/wallstr...
Don’t miss a WSJ video, subscribe here: http://bit.ly/14Q81Xy'>http://bit.ly/14Q81Xy

More from the Wall Street Journal:
Visit WSJ.com: http://www.wsj.com
Visit the WSJ Video Center: https://wsj.com/video

On Facebook:   / videos  
On Twitter:   / wsj  
On Snapchat: https://on.wsj.com/2ratjSM