01 -
Toss the onion slices, salt, and sumac in a medium bowl. Gently rub the onions with your hands until the seasoning clings well, for about 30 to 60 seconds.
02 -
Add the vinegar, parsley, and oil. Stir it all together, cover the bowl, and let it sit for at least 20 minutes. You can also store it in a sealed container for up to four days.
03 -
Use it as a side salad or a flavorful topping. Try it with burgers, wraps, salads, sandwiches, and more.