Ingreadient

• 2 tablespoons extra-virgin olive oil
• 1 medium yellow onion, chopped
• 1 (8 ounce) package sliced cremini mushrooms
• 2 celery stalks, thinly sliced
• 2 carrots, thinly sliced
• 2 tablespoons minced garlic
• 2 teaspoons chopped fresh sage
• ¼ teaspoon cayenne pepper (optional)
• 1 dried bay leaf
• 2 pounds bone-in chicken thighs, skin removed
• 8 cups unsalted chicken broth
• ½ teaspoon salt
• ½ teaspoon ground pepper
• 2 cups chopped stemmed lacinato kale
• 2 tablespoons fresh lemon juice