1.
Peel the onion and slice it in half. Carefully separate the outer layers to form small, natural bowls. Set aside.
2.
Drain the tuna well and set it in a bowl along with the eggs. Break the eggs into pieces using a fork. Add the
olives, capers, and chives, all finely chopped. Mix together gently.
3.
Add the
extra virgin olive oil, lemon juice, and mayonnaise. Stir until the mixture is well combined. Season with salt and pepper to taste.
4.
Fill the onion bowls with the tuna and egg salad. Finish with a small drizzle of extra virgin olive oil and top with a few chopped olives before serving.