A dairy farmer drives some of his Holstein cows out to pasture in the Madison County, N.Y. town of Lenox. Jim Commentucci/The Post-Standard /Landov hide caption

itoggle caption Jim Commentucci/The Post-Standard /Landov

John Clark pours raw milk into a glass at Applecheek Farm in Hyde Park, Vt. Toby Talbot/AP hide caption

itoggle caption Toby Talbot/AP