How to make
The lettuce is cleaned under running water and cut or shredded according to your preferences.
The tomatoes and cucumbers are diced. In a bowl, mix the lettuce, tomatoes, cucumbers and sweet corn and the two tins of tuna.
Season everything with salt, lemon and olive oil. Mix everything and place it in a serving bowl.
Add the third tin of tuna at the center of the salad. Garnish with olives.