The U.S. Department of Agriculture projected that 2017 consumption will rise 10 percent from a year earlier, hitting 940,000 metric tons, the highest in half a century. The nation will devour more than 2 billion pounds of butter this year, more than 6.1 pounds per person, and the resurgence has helped make Dallas Wuethrich a billionaire. His Grassland Dairy Products Inc., founded in 1904 by his grandfather John, who churned it by hand, now produces about one-third of the nation’s butter.
