How to make
Wash all the vegetables. In a suitable dish, julienne the lettuce. Flavor it with salt and oil.
Take a plate and put some of the lettuce in it. Cut the cucumbers and tomatoes into crescents and stack them on the lettuce as you like. Top with onions, sliced into rings.
On top of the circles of the onions, put a piece of feta cheese. Decorate with olives, sprinkle it with oregano, pour over lightly with oil and you're done.