01 -
Grab a medium bowl and combine your thinly sliced onions with the sumac and salt. Here's where you get hands-on - gently massage the seasonings into the onions for about 30-60 seconds until they're well coated.
02 -
Pour in your vinegar and olive oil, then add the fresh parsley. Give everything a good mix, cover your bowl, and let those flavors mingle for at least 20 minutes before serving.
03 -
Your sumac onions are ready to enjoy! Use them to add a punch of flavor to burgers, sandwiches, wraps, or salads. If you're not using them right away, they'll keep in an airtight container in the fridge for up to four days.