01 - Soak dried wood ear mushrooms and glass noodles in warm water for 10 minutes, then drain and finely chop.
02 - In a large bowl, combine ground pork, 3 eggs, chopped mushrooms, glass noodles, onion, scallions, minced garlic, fish sauce, soy sauce, sugar, black pepper, and salt. Mix thoroughly until well incorporated.
03 - Lightly grease a heatproof dish or loaf pan. Pour the pork mixture in and level the surface.
04 - Place the dish in a steamer over simmering water. Cover and steam for 25–30 minutes, or until set.
05 - Beat the remaining egg yolk. After 25 minutes of steaming, spread the yolk over the top of the meatloaf. Cover and steam for an additional 5–7 minutes, or until the yolk is set and glossy.
06 - Remove from heat, let cool slightly, then slice and serve with jasmine rice and pickled vegetables.