Matzo Ball Soup

Name: Matzo Ball Soup
Ingredients: For the fortified chicken stock; 1 whole chicken; 12 cloves garlic, divided; 1/2 lemon; 6 sprigs fresh thyme; 2 sprigs fresh sage; Olive oil; Salt; 32 ounces unsalted chicken stock; 32 ounces water (replace water with chicken stock if your stock is homemade); 1 tablespoon whole black peppercorns; 1 tablespoon whole coriander; 1 yellow onion, large diced; 1 bay leaf; 1 cup loosely packed fresh dill; For the matzo balls; 2 medium carrots, washed and cut into 1/2-inch pieces; 2 ribs of celery, cut into 1/2-inch pieces; 2 cups cooked shredded chicken; 4 eggs, lightly beaten; 5 tablespoons chicken fat; 1/2 teaspoon salt; 2 tablespoons chicken stock; 1 cup matzo meal; 2 tablespoons seltzer; A handful of chopped fresh dill sprigs to garnish