Heat the ghee in a 3-quart saucepan over medium to medium-high heat. Add the onion and cook until softened, but not starting to brown, about 4 to 6 minutes, stirring occasionally.
Add the broth, sesame oil, coconut aminos, and black pepper, and bring up to a simmer. Slowly add the beaten egg while stirring with a wooden spoon. Transfer to 2 serving bowls and top each with scallion. Serve.
This nutritional information refers to each serving of the entire recipe and not just the products used as ingredients.