Slice the abalone across the grain to about 1/4-inch thickness. Soak the fish maws in hot water until they plump up and soften, about 20-30 minutes. Cut into large chunks
Preheat oil in a medium-size pot. Add in ginger and garlic and saute until fragrant, about 1 minute. Add the chicken pieces and saute until they just turn color. If you prefer to leave the abalone whole, add the abalone in. Add the chicken stock, carrots, fish maw. Bring to a boil and then lower the heat to a gentle simmer and let it simmer for about 5 minutes
If you use sliced abalone, add them in and cook for max 1 minute. Season the soup with pinch of salt and sugar to your taste. Stir in the goji berries. The residual heat will soften the goji berries without overcooking them
Garnish with chopped green onion and serve immediately