Basic Noodle Soup

Name: Basic Noodle Soup (Qing Tang Mian 清湯麵)
Cuisine: Chinese
Ingredients: 2 spring onions, green parts only, finely sliced; 200 dried noodles, or 300 g fresh noodles; Handful of pak choy, choy sum, pea shoots, lettuce leaves or other greens; Ground white pepper; 600 ml stock; ½ tsp sesame oil; 4 tsp lard, rendered chicken fat or cooking oil; Salt