Ginger and lemon grass whole baked snapper

Ingredients

• 1.3 kilogram whole snapper
• 2 tablespoon olive oil
• 1 tablespoon finely grated ginger
• 1 stalk lemongrass, trimmed, chopped finely
• 1 teaspoon finely grated lemon rind
• 1/4 cup (60ml) lime juice
• 1/4 teaspoon ground white pepper
• 1/4 cup (55g) caster sugar
• 1/3 cup (80ml) water
• 1/2 teaspoon chilli flakes
• 1 tablespoon fish sauce
• 4 fresh long chillis, seeded, sliced thinly
• lime wedges, to serve
• fresh coriander sprigs, to serve