In a medium bowl, combine together the tuna, dill, mayo, olive oil, lemon juice, and red wine vinegar. Mix until well combined.
250 grams tuna, ¼ cup dill, 1 tbsp mayo, ½ tbsp olive oil, 1 lemon, 2 tsp red wine vinegar
To a separate bowl, add the arugula, radicchio, red onion, green olives, and avocado. Toss to combine everything together.
4 cups arugula, ½ cup radicchio, ¼ cup red onion, 2 tbsp olives, ½ avocado
To the same bowl, add the tuna mixture and gently mix everything together until tuna is well incorporated with the rest of the veggies.
Divide the salad into individual serving plates or bowls. Season with a crack of black pepper, serve and enjoy!