1. Heat oil in wok. Add sliced onion and sauté until brown. 2. Add crushed garlic, ginger, chilli and turmeric. Cook for 1-2 minutes. 3. Add peeled prawns, cleaned mussels and cook for 2-3 minutes. 4. Add seafood mix and cook for 2- 3 minutes. 5. Add all of the remaining ingredients, simmer for 2-3 minutes, and ensure mussels have opened. Serve.