Gravy. ¼. cup extra-virgin olive oil. 1. lb. ground chicken. 2. medium onions, thinly sliced. 4. celery stalks, cut crosswise on a diagonal 1″ thick. 2. medium carrots, peeled, halved lengthwise, cut on a diagonal1″ thick. 6. garlic cloves, finely grated. ¼. cup (31 g) all-purpose flour. 2. cups low-sodium vegetable broth. ½. cup dry white wine. ⅔. cup heavy cream. 1. Tbsp. plus 1½ tsp. Dijon mustard. 1. Tbsp. finely grated lemon zest. 1½. tsp. Diamond Crystal or ¾ tsp. Morton kosher salt, plus more. ¾. tsp. freshly ground pepper, plus more. Biscuits and Assembly. 2. tsp. baking powder. 1½. tsp. Diamond Crystal or ¾ tsp. Morton kosher salt. ½. tsp. baking soda. 2. cups (250 g) all-purpose flour, plus more for surface. ½. cup (1 stick) chilled unsalted butter, cut into pieces. 1¼. cups sour cream (from a 16-oz. container). ¾. cup finely chopped dill, plus more for serving. Heavy cream (for brushing)
