Slice green onions and set a few aside for garnish
In a large sauce pan, over medium heat, combine chicken broth, green onions, ginger and garlic. Bring to a boil and simmer for 5 minutes. Strain and remove green onions and garlic if desired.
Add in frozen wontons and cook according to directions on package, about 8 minutes probably.
Two minutes before done cooking, add in cabbage or add it in when you remove soup from the heat for a crunchier texture.
Remove soup from heat an add in sesame oil. Stir to combine and serve
Garnish with reserved green onion and toasted sesame seeds.
Notes
The amount of wontons you use will depend on their size. If they are small I added about 25. If larger, use less.
If you want the cabbage crunchier, just add it in before serving.