Ingredients 2 pounds bone-in, skin-on chicken thighs (4 to 5) Kosher salt and freshly ground pepper 1 stick (8 tablespoons) cold unsalted butter 10 ounces button or cremini mushrooms, quartered (3 cups) 1 onion, diced (1 1/2 cups) 3 carrots, diced (1 1/4 cups) 1 stalk celery, diced (1/2 cup) 8 ounces white potato, peeled if desired and cut into 1/2-inch dice (1 1/2 cups) 1 1/4 teaspoons dried marjoram 1 2/3 cups plus 1/4 cup unbleached all-purpose flour 1 cup partially defrosted frozen peas 6 tablespoons chopped fresh dill, plus more for serving 2 teaspoons baking powder 3/4 cup whole milk Lemon wedges, for serving Preparation Combine chicken, 2 teaspoons salt, and 4 cups water in a medium saucepan....