Piyak is a Turkish Bean Salad
Cook white beans, when tender, add one onion sliced thinly into semicircles. Add lemon juice, vinegar and olive oil to the beans. Season to taste. Chill for a couple of hours.
The interesting part of this salad is the presentation as it is assembled in layers.
First mix in chopped parsley into bean mix. Using a large plate spread the bean mixture into it. Layers of black olives, quarters of tomatoes and hard boiled eggs are added. Drizzle Olive oil on top and season with pepper. I added a hot chile to the salad.