Steamed Flounder With Black Mushrooms And Ham

• 8 chinese mushrooms soaked in boiling (dried)
• 4 garlic (cloves chopped)
• 2 flounder (whole)
• 120 ml soy sauce
• 80 ml chicken stock
• 45 ml dry sherry
• 45 gr ginger (minced plus)
• 45 ml rice wine
• 16 ml soy sauce
• 10 ml chinese sesame oil (toasted)