Barbecued Mackerel with Chutney on Toast

Ingredients

• 3 mackerel, gutted and scaled and the backbone removed
• Sea salt
• Spray bottle filled with 1 part white wine vinegar, 5 parts olive oil
• 1 Bramley apple, grated
• 1 pear, grated
• 1 large tomato, grated
• 1×5 cm fresh ginger, grated
• ½ shallot, peeled and diced
• 1 clove garlic, grated
• Few sprigs of rosemary
• 1 tsp ground cumin
• 1 tsp chilli powder
• 2 star anise
• 100g brown sugar
• 50ml white wine vinegar
• Splash of sherry vinegar
• 2 slices charred bread
• Drizzle of olive oil
• Salt
• pepper