Six years after that lonely Christmas, Siggi's Skyr is available at Whole Foods and Stop & Shop in nine flavors (peach and strawberry debut this month). The list of ingredients is refreshingly brief—Siggi's blueberry variety contains only fruit, milk (from small family farms in upstate New York), and agave, which doesn't cause a sharp spike in blood sugar like other sweeteners. "People are seeking this explosiveness on the palate, so they start to drift away from the flavor of a real fruit," Hilmarsson says. "But an actual blueberry on its own tastes pretty good!"
