01 -
Add the onion slices, sumac and salt to a medium bowl. Use your hands to gently massage the salt and sumac into the onions for about 30-60 seconds.
02 -
Add the vinegar, oil and parsley. Mix thoroughly then cover and set aside to marinate at least 20 minutes before serving.
03 -
Serve as a simple side salad or enjoy as condiment. Add onions to burgers, sandwiches, wraps, salads, etc.