"Organic" milk, stripped of its natural fats and goosed up with a synthetic additive.

Dean Foods is by far the largest U.S. dairy processor. According to Sen. Bernie Sanders (I-Vt.), Dean processes 40 percent of fluid milk consumed in the U.S., which it distrubutes in a dizzying array of brands. Its dominance extends to organic milk, too — Dean’s Horizon brand is the largest supplier of organic milk.

Dean’s Horizon organic milk generates plenty of controversy. For years, Horizon has been sparring with the watchdog group Cornucopia over its farming practices, like use of conventionally raised heifers on its certified-organic farms. Cornucopia also goes after Dean for putting additives in its “organic” products. The latest dust-up is over a new Horizon product called “Fat-Free Milk Plus DHA Omega-3.”