Salade Niçoise with Tuna

For the tuna, rinse the tuna and pat dry.

For the salad, rinse the beans, trim and cook for 6-8 minutes in boiling salted water. Drain, rinse in cold water and drain. Rinse the tomatoes and cut into eighths. Peel onion, halve and cut into strips. Peel eggs and cut in half. Mix beans with tomato and onion. Rinse the romaine lettuce, trim and spin dry. Tear into smaller pieces as needed. Transfer to plates and place beans and tomatoes in the middle of the salad. Place olives and eggs on top. For the dressing, peel the shallot and chop finely. Stir with the vinegar, oil and chives and season with salt and pepper.