Serves 4 Courtesy of Barbara Westfield INGREDIENTS 4 large ghioggia (candy striped) beets 2 tablespoons (30 g) softened butter 2 sprigs fresh thyme, stripped for leaves 1/2 teaspoon (2 g) salt or to taste 1/4 teaspoon (1 g) freshly ground black pepper or to taste INSTRUCTIONS Preheat the SousVide Supreme to 185F/85C. Trim the root…