Fresh healthy low-calorie salad. It is good at any time of the year when you want vitamins. Ideally, olive oil and balsamic vinegar are used for dressing, but you can also use low-fat yogurt or light mayonnaise.
Carefully break the tuna into small pieces and put it in a deep bowl.
Add the tomatoes, cut into small cubes.
I deleted the seeds.
Add the avocado, cut into the same small cubes.
Then add the mozzarella, cut into larger cubes.
And finally, pick the lettuce leaves with your hands.
Mix the vinegar and oil with salt and black pepper, pour over the salad and mix gently.
Put the mixture in a salad bowl and, if desired, sprinkle with crackers