Oriental Steamed Crabs

Ingredients

• 6-8 green sand crabs
• 50g fresh ginger, peeled and sliced thinly
• 1/3 cup oyster sauce
• 1/3 cup chicken marinade
• 1 can beer
• A slurp olive oil
• 1 tbsp. cornflour
• 6 spring onions, sliced on an angle