Step 1

Put thin onion slices in a large bowl. Sprinkle sumac and salt over them. Massage with your hand for 10-20 seconds.

Step 2

Add in chopped tomatoes, parsley and white beans.

Step 3

To make the dressing, in a medium bowl, whisk together the olive oil, lemon juice, apple cider vinegar and salt.

Step 4

Pour the dressing over the salad and give it a stir.

Step 5

Optionally, top with hard boiled egg slices, sprinkle salt and sumac over them and serve immediately.