Heat 3 tablespoons of oil in portions in a coated frying pan. Fry the slices of bread until golden brown. Clean, wash and quarter the tomatoes and remove the seeds. Cut tomato quarters into small cubes. Peel garlic and chop finely. Drain capers.
Wash basil, dab dry and remove the leaves. Cut basil into fine strips. Mix tomatoes, garlic, capers and basil. Season with salt and pepper. Add 1 tablespoon of vinegar and 1 tablespoon of oil. Clean, wash and thinly slice the zucchini. Clean and wash the rocket. Peel onion and cut into thin slices. Mix 2 tablespoons of vinegar and 1 tablespoon of oil. Season to taste with salt, pepper and sugar. Mix the salad ingredients with the marinade. Spread the tomatoes on the bread slices.
Peel onion and cut into thin slices. Mix 2 tablespoons of vinegar and 1 tablespoon of oil. Season to taste with salt, pepper and sugar. Mix the salad ingredients with the marinade. Spread the tomatoes on the bread slices. Garnish with basil. Arrange 3 bruschetta each with a bowl of lettuce on a plate. Serve garnished with basil