For the white scrambled eggs with tuna and celeriac pasta, whisk the egg whites and season with salt and pepper. Pour into a hot pan with a little olive oil and let it set.
Spread the tuna on top, let it warm a little, sprinkle with grated cheese and season with herbs. Clean the celery stalks well, cut them into thin strips with a peeler and toss them briefly in some warm olive oil, add a little salt.
Wash the tomatoes, dry them, cut them in half and sauté them also in a little olive oil, season with salt and pepper.