Here is my favorite recipe for Piyaz, a Turkish white bean salad made with tahini that outshines all others. This salad is a beloved classic, winning the admiration of the Turkish people.
Thinly slice the onion, sprinkle it with salt, then rub it between your hands to soften it. Transfer to a mixing bowl.
Add the tomato, onion, parsley and beans to the onion in the mixing in bowl.
Add the olive oil, lemon juice, vinegar, sumac, and salt. Toss well until combined.
Transfer to a serving bowl. Garnish with slices of hard-boiled egg and roughly chopped parsley.
Notes
You can use canned beans if you prefer not to cook them from scratch.
Rubbing the salt into the onion slices by hand ensures a more pleasant-tasting salad.
Adding large chunks of diced tomato enhances the salad's texture and juiciness. For the best flavor and texture, use firm, ripe tomatoes.
Gently toss the salad ingredients until they are evenly coated with the dressing. Be careful not to overmix to prevent the beans from breaking apart and to preserve the salad's texture.
Feel free to customize the salad by adding ingredients like olives, peppers, or tahini for extra flavor.