Steamed Asian sea bass in the bag

INGREDIENTS

• 6 kaffir lime leaves
• 1-2 sticks lemon grass, chopped
• 1 clove garlic, finely sliced
• 1-2 red chillies, to taste, seeded and chopped
• 1 small tablespoon freshly grated ginger
• 1 handful coriander, leaves picked and stalks reserved, plus extra to serve
• 1 tablespoon Kikkoman low-salt soy sauce
• 1 lime, zested and halved
• 2 tablespoons olive oil
• 2 thick sea bass fillets, from
• , ask your fishmonger, about 200g each
• 1 free-range egg white
• 1 small wineglass sake