Smoked Salmon and Lemon-Caper Sour Cream Crostinis

Ingredients

• ⅓ cup cup light brown sugar
• ⅓ cup cup coarse sea salt
• 1 tbsp tablespoon coarsely ground black pepper
• 1 tbsp tablespoon finely grated lemon zest
• 1 side of salmon (with skin, about 1.5kg), pin bones removed
• 2 tbsp tablespoons extra-virgin olive oil
• 1 cup cup sour cream
• 8 tbsp tablespoons capers, roughly chopped
• 4 tbsp tablespoons finely chopped red onion
• 4 tbsp tablespoons finely grated lemon zest
• 2 tbsp tablespoons lemon juice
• 4 tsp teaspoons Dijon mustard
• 2 baguette rolls
• Olive oil spray
• 4 tbsp tablespoons finely chopped fresh chives, to serve