Tuna Tartare

Ingredients

• ½ small red onion, very finely chopped
• 400g of sushi-grade albacore or yellow fin tuna, cut into 1cm dice
• 1 serrano or jalepeño chilli, deseeded & finely chopped
• 1 tbsp of capers, rinsed & chopped
• 1 avocado, peeled, stone removed & cut into 1cm dice
• Juice of 1-2 limes
• Sea salt
• freshly ground black pepper
• 2 tbsp of extra-virgin olive oil
• Handful of coriander leaves, chopped