Hot and Sour Soup Recipe

For the Broth: Combine chicken feet, chicken bones, and ham in a large stockpot. Cover with cold water. Bring to a boil over high heat. Drain bones in sink, then rinse under cold running water. Return to pot, add ginger, garlic, onion, and 6 scallions. Cover with water, bring to a boil over high heat, reduce to a bare simmer, and cook for 1 hour, skimming off scum and fat occasionally. Pour through a fine-mesh strainer into a large pot. Discard solids. You should have about 1 1/2 quarts broth. If not, reduce to 1 1/2 quarts. Serious Eats / Qi Ai Combine 2 teaspoons cornstarch with 2 teaspoons water in a small bowl and mix with a fork. Add to broth. Add soy sauce and sesame oil. Bring to a boil, season to taste with salt and pepper, and keep warm. Serious Eats / Qi Ai For the Garnish: Meanwhile, place wood-ears and daylilies in separate bowls, cover with warm water, and let soak at least 30 minutes. Drain carefully, then thinly slice wood-ears and cut daylilies crosswise into 2-inch pieces. Serious Eats / Qi Ai When broth is ready, add sliced wood-ears, daylilies, tofu, and pork. Beat together egg with 1/2 teaspoon cornstarch. Bring broth to a boil, reduce to a bare simmer, and slowly pour the egg into the broth in a thin steady stream. Let egg set for 15 seconds, then stir gently to incorporate. Season soup to taste with salt if necessary. Serious Eats / Qi Ai To Serve: Just before serving, stir in white pepper and vinegar. Drizzle with sesame oil and sprinkle with scallions and cilantro. Serve immediately, passing more white pepper, vinegar, and sesame oil at the table to adjust for taste. Serious Eats / Qi Ai