Soak the dried shiitake mushrooms in 120 ml water for 10–15 minutes until softened.
Finely slice the spring onions.
If using cabbage, sprinkle with the sea salt and leave for 10 minutes. Squeeze out any excess moisture.
Squeeze the mushrooms dry, remove the stems and finely chop.
Combine the mushrooms, spring onion and cabbage or pork mince in a bowl.
Add the fresh ginger, sugar, light soy sauce, sesame oil, cornflour and cracked black pepper.
Mix thoroughly until sticky and well combined.