Mix all vinaigrette ingredients in a small bowl. Peel the avocado, cut in half and remove the pit. Slice thinly and drizzle with lemon juice.
Arrange iceberg lettuce leaves on plates, avocado and torn mozzarella (if needed you can soak it with water from its package to make it juicier). Add endive or arugula, sprinkle with sea salt and freshly ground pepper, drizzle with lemon vinaigrette.