Steamed cod fish with preserved olive leaves

Ingredients

• 200 g of cod fillet
• 1/2 teaspoon of minced garlic
• 2 teaspoons of preserved olive leaves
• 1 teaspoon of shaoxing wine
• 1 teaspoon of sesame oil
• Pinch of sugar
• 50 ml of stock
• 4 teaspoons of soya sauce
• Small red chilies (chopped)