Japanese Gyoza Pot Stickers

• 4 green onions (chopped)
• 3 mushrooms soaked in (dried)
• 230 gr beef (ground)
• 140 gr cabbage
• 16 ml cooking wine
• 16 ml kikkoman soy sauce
• 16 ml sesame oil
• 4 gr ginger root (grated)
• 1 gr black pepper