Pork Dumpling Soup

• 2 green onions with tops chopp
• 3/4 siu mai skins
• 1/2 head green cabbage
• 1/2 egg (white)
• 1,700 ml chinese chicken broth
• 130 gr pork (lean ground)
• 10 ml sesame oil
• 5 ml dry wine (white)
• 3 gr cornstarch
• 2 gr salt