Broth - Place all broth ingredients in a saucepan. Bring to a simmer over medium-high heat, then reduce heat so it’s simmering gently. Simmer 10 minutes without a lid.
Step 2
Cook vegetables - Add choi sum stems and carrot to the broth. Simmer for 2 minutes. Add choi sum leaves and simmer for another minute. Stir in sesame oil just before serving.
Step 3
Noodles - Meanwhile, cook egg noodles in boiling water per packet directions. Drain, give the noodles a quick rinse under tap water. Shake off excess water well.
Step 4
Assemble - Divide noodles between bowls. Top with the vegetables. Pick the garlic and ginger out of the broth, then broth pour over the noodles. Sprinkle with green onions and serve!