Roasted Salmon with a Cheat's Vietnamese Caramel Sauce

INGREDIENTS

• juice of 1 lime
• a handful of fresh cilantro, chopped, to serve
• 3 tablespoons soy sauce
• lime wedges, to serve
• salt and freshly ground black pepper
• 3 or 4 scallions, chopped, to serve
• 4 x 7 ounces salmon fillets
• 3 tablespoons fish sauce
• 1 teaspoon freshly grated ginger
• 1/2 cup soft brown sugar
• 1 tablespoon olive oil
• steamed rice, to serve
• 1 red chili, deseeded and finely chopped, to serve