Clean, wash and cut the tomatoes into large pieces. Clean and wash the cucumber and cut it into thin slices. Peel and roughly dice the vegetable onion. Clean and wash the lettuce, pluck it into bite-sized pieces and let it drain well in a sieve.
For the vinaigrette, wash parsley, dab dry and chop finely. Mix vinegar, salt, pepper, sugar and 3/4 of the parsley. Fold in 5 tablespoons of oil. Mix pickled lettuce, tomatoes, cucumber, onion and olives.
Spread vinaigrette over it. Allow a little bit of the vinaigrette to soak through. Cut the feta into pieces. Whisk the egg in a deep dish. Turn the feta first in the egg and then in breadcrumbs. Heat 2 tablespoons of oil in a frying pan and fry the feta on each side for about 1 minute at medium heat.
Spread the salad on four plates, add the feta and sprinkle with the remaining parsley. Farmhouse bread tastes good with it.