- Combine 2 cups hot water and ¼ ounce dried shiitake mushrooms in bowl. Let sit until mushrooms are tender, about 15 minutes.
- Drain mushrooms, reserving liquid. Remove and discard mushroom stems. Finely chop mushrooms.
- Heat 1 tablespoon vegetable oil in 12-inch nonstick skillet over medium-high heat until shimmering. Add mushrooms, reduce heat to medium, and cook until golden brown, 1 to 2 minutes, stirring constantly.
- Add 2 minced garlic cloves and ½ teaspoon grated fresh ginger and cook until fragrant, about 1 minute, stirring constantly.
- Add remaining 1 tablespoon vegetable oil, 1 pound ground pork, and pinch salt to skillet and cook over medium-high heat until browned, breaking up meat into small pieces, 5 to 7 minutes.
- Add 2 tablespoons Shaoxing wine, scraping up any browned bits, then stir in ¼ cup reserved mushroom soaking liquid, 2 cups chicken broth, 1 tablespoon soy sauce, 1 tablespoon dark soy sauce, 1 tablespoon packed brown sugar, and ¼ teaspoon five-spice powder.
- Bring to boil and add ½ cup fried shallots.
- Cover skillet, reduce heat to medium, and simmer vigorously, until broth is mostly absorbed and pork is tender, about 20 minutes. (If sauce reduces too quickly, add more water, 1 tablespoon at a time.)
- Serve pork sauce with steamed rice and desired toppings.
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