1.Toss pork strips with 1/4 cup soy sauce and ginger in a medium bowl; let stand20 minutes. In another bowl, stir together remaining 2 T. soy sauce, rice vinegar, cornstarch, sugar and salt; set aside. 2.Heat oil n a large pot over medium high heat, then add pork and marinade.Cook, stirring constantly, until pork loses its pink color, about 4 minutes. Remove pork to a bowl with a slotted spoon, set aside. Add bamboo shoots to pot and cook 1 minute. 3. Add broth to pot and bring to a boil. Add mushrooms, reduce heat and simmer about 20 minutes. Add tofu and cooked pork; simmer 5 minutes. Add reserved soy-vinegar mixture and simmer 5 minutes more until liquid thickens. 4. In a small bowl, beat eggs with sesame oil (Add the oil right before use) . Slowly poor eggs into soup in a thin stream while stirring soup very slowly in one direction. Add pepper, stir briefly and simmer 5 minutes. Serve topped with cilantro and green onions.