Save
These sumac onions deliver a hit of tang and freshness to any meal with almost no effort. I love scattering them over roasted chicken or stuffing them in pita wraps for a vibrant crunch and a burst of lemony flavor.
I first discovered sumac onions at a Mediterranean café and could not believe how transformative such a simple condiment could be. Now I always keep a jar on hand to elevate even the simplest weeknight meals.
Ingredients
- Large red onion: Thinly sliced red onion gives a mild sweet bite and beautiful color. Look for firm heavy onions with tight skin and no signs of sprouting
- Sumac: This deep red spice has a tangy citrus quality that adds a signature brightness. Buy sumac from a Middle Eastern grocery for the freshest flavor
- Salt: Draws out moisture and softens the onions so the flavors marry. Kosher salt works best for even seasoning
- Red wine vinegar or lemon juice: For acidity and extra brightness. Choose a good quality vinegar or fresh lemon for best results
- Extra virgin olive oil: Adds richness and rounds out the sharpness. Use fruity olive oil for extra depth
- Fresh parsley: Chopped parsley gives a fresh herbal note. Pick leaves that are bright green with no yellowing
Instructions
- Prepare the onions:
- Peel and thinly slice the red onion as thin as possible using a sharp knife or mandoline. Thinner slices absorb the flavors better and soften quickly
- Massage with spice:
- Place onion slices in a large bowl. Sprinkle over sumac and salt then use your hands to gently massage the mixture into the onions for at least thirty seconds until the onions start to wilt and their color brightens
- Add dressing ingredients:
- Pour in red wine vinegar or lemon juice and drizzle in olive oil. Add the chopped parsley
- Mix and marinate:
- Toss everything together so the onions are evenly coated. Cover the bowl and let the onions marinate for at least twenty minutes at room temperature. This allows the flavors to meld and the onions to soften. For deeper flavor let sit up to one hour
- Serve or store:
- Give the onions a good toss before serving. Drain off any extra liquid if needed. Enjoy as a salad side or as a topping for grilled meats falafel or your favorite sandwich. Leftovers can be stored in the fridge for up to four days
My favorite way to enjoy sumac onions is sprinkled over a big platter of grilled kebabs at our family backyard parties. The pop of citrus and color always reminds me of summer gatherings and laughter around the table.
Storage Tips
Store any leftover sumac onions in an airtight glass container in the fridge. They will keep their brisk flavor for up to four days. Before using just drain off any liquid that has pooled at the bottom
Ingredient Substitutions
No red onions Try thinly sliced white or yellow onions though the flavor will be sharper. No parsley Swap in chopped fresh mint or cilantro for a different herbal note. Out of sumac Add a tiny sprinkle of lemon zest to mimic the citrus tang though nothing truly replaces sumac
Serving Suggestions
Pile generously on grilled burgers or halloumi wraps for a refreshing kick. Stir into salads with tomatoes cucumbers and feta for instant brightness. Use as a topping for roasted eggplant or rice bowls
Cultural and Historical Significance
Sumac is a staple in Middle Eastern kitchens and has been used for centuries to add acidity when citrus was scarce. It is common to find sumac onions as part of mezze spreads or as the finishing touch on shawarma and kebab sandwiches throughout the Levant region.
Seasonal Adaptations
Spring and summer are best for enjoying local sweet onions and garden herbs. In cooler months add sliced radish or carrot for extra crunch. If you get especially sharp onions soak slices in cold water for five minutes then drain before massaging with sumac
Success Stories
A friend texted me after serving these at a picnic and said her guests finished the onions before the main course. That is the power of a good condiment and how easy it is to switch up your family’s favorites.
Freezer Meal Conversion
While sumac onions lose some of their crunch when frozen you can still prepare a large batch and freeze in small portions for up to one month. Thaw overnight in the refrigerator then refresh with a dash of fresh vinegar and parsley before serving.
Sumac onions are an effortless way to brighten any meal. Make a batch and see how quickly they disappear from your table!
Common Recipe Questions
- → What does sumac add to onions?
Sumac gives the onions a tangy, citrusy flavor and a beautiful reddish-purple color, elevating their taste and appearance.
- → How long should the onions marinate?
Let the onions marinate for at least 20 minutes to encourage tenderness and allow the flavors to meld together fully.
- → What can I use instead of red onion?
You can substitute white or yellow onions. Expect a less sweet flavor, so consider adding a pinch of sugar to balance.
- → How long do marinated onions keep?
Store in an airtight container in the refrigerator for up to four days; flavors will deepen as they sit.
- → Can I swap parsley for other herbs?
Yes, you can replace parsley with mint or cilantro for different herbal notes and a unique twist.