Step 3
In a large bowl, combine ground pork, fatty ground pork, mashed tofu, diced water chestnuts, minced ginger, minced scallion whites, egg yolk, sugar, Shaoxing wine, salt, 2 teaspoons minced garlic, 1/2 teaspoon white pepper powder, 2 teaspoons soy sauce, and 1 teaspoon cornstarch, and gently mix until well combined, being careful not to over-mix.