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Home » Recipes » Vegetable Dishes

Turkish Sumac Onions Recipe (Sumac-Marinated Red Onions)

Published: Oct 28, 2023 · Modified: Apr 10, 2025 by Geetanjali · This post may contain affiliate links · Leave a Comment

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Turkish Sumac Onions Recipe (Sumac-Marinated Red Onions): Add some zing to your grilled meats with this 5-minute onion salad, featuring thinly sliced red onions tossed with sumac, fresh parsley, and lemon juice for a bright, refreshing taste. 

Image showing onion salad with sumac served on a white plate.
Jump to:
  • Sumac: A bold and Tangy Spice
  • More Onion Based Recipes
  • Ingredients You'll Need
  • Instructions Step By Step
  • Key Points
  • FAQ
  • Can I use a different type of onion for sumac onions?
  • Recipe
  • Comments

Red onions are sharper and sweeter than the other onion varieties, which makes them a popular choice for raw preparations such as salads or pickling. 

Cut them into halves and soak them in water as you prepare other ingredients to reduce the pungency and prevent teary eyes. 

Lately, I've been obsessed with this humble onion salad. This tangy onion salad is simple, quick, and packed with so much flavor. You'll only need a few ingredients and 5 minutes to make this crunchy, tangy condiment. The recipe is also light, naturally vegan and gluten-free.

If you have ever dined at a Turkish or Middle Eastern restaurant and ordered kebabs, you would likely have noticed chicken and meat kebabs served with a side of onion salad. I enjoy pairing my Chicken Adana Kebab or something like Chicken Shawarma with this simple onion salad as the flavor is the perfect condiment to go with them.

Sumac onions are made by pickling sliced red onions in a marinade, typically consisting of sumac and lemon juice. The sumac gives the onions a zingy flavor and adds a distinctive reddish color. 

These are often used as a topping or accompaniment in various dishes, such as salads, sandwiches, kebabs, grilled meats, and wraps. 

Sumac: A bold and Tangy Spice

Sumac spice is a spice native to the Middle Eastern and Mediterranean region. It is made by drying and coarsely grinding the sumac berries. 

The spice has a tangy lemon-like flavor and dark red color, which makes it a versatile ingredient for enhancing the taste and color of various dishes, including salads, marinades, and dips.

Image showing sumac spice powder close up.

Sumac can be found in grocery stores and supermarkets with Middle Eastern or Mediterranean ingredients. You can even purchase it from online retailers. I got mine from Amazon. 

More Onion Based Recipes

  • Subway Sweet Onion Sauce
  • Indian Kachumber Salad
  • Spicy Prawn Mango Summer Salad

Ingredients You'll Need

For the full measurements, scroll down to the recipe card below.

Image showing sumac onions ingredients placed on a light brown color background.

Sumac: is the key ingredient that gives the recipe its distinct flavor. So it should not be substituted.

Red onions: red onions are the best for this salad. 

Parsley: Freshly chopped parsley adds a pop of green color and provides a refreshing balance to the recipe.

Lemon juice: fresh lemon juice adds more depth of flavor to the dish. 

Red chili flakes: to add a hint of spice to the dish. Alternatively, crushed peppercorns, red pepper flakes or sliced fresh chili would also work. You can even omit it if you wish.

Salt: for seasoning. I used sea salt, but you can use kosher salt, pink Himalayan sea salt, flaked sea salt, or regular table salt.

Olive oil: adds some richness to the dish. Use high-quality extra virgin olive oil.

A basic sumac onion recipe includes these ingredients, but feel free to add your twist to the recipe to suit your palate. 

Instructions Step By Step

1. To prepare the raw onions, peel and cut the onions into halves. Slice the onions thinly using a sharp knife or a mandoline slicer for even slices. Transfer the onion slices to a large bowl. If raw onion's sharpness bothers you, you can soak the onion halves in cold water for about 20 minutes. This will reduce the pungency and prevent your eyes from becoming teary when you slice them.  

2. Finely chop parsley and put them in the same bowl as the sliced onions.

Image showing red onions slices, sumac, parsey.
Red onions, sumac, parsley, chili flakes, and all other ingredients in a white bowl.

3. Add sumac, salt, red chili flakes, lemon juice, and olive oil. Mix everything. 

4. Taste and adjust the seasoning as needed. 

5. The sumac onions are ready to serve. You can serve them immediately or let the onions marinate for at least 30 minutes in a medium bowl or a glass jar to allow the flavors to meld together before serving.

Key Points

  • When making these sumac pickled onions, it's important to taste and adjust the seasoning to your liking. This ensures the flavors are just right and match your taste.
  • While slicing the onions, aim for thin slices, as they absorb the flavors more and provide a better texture in the salad. 
  • If raw onion's sharpness bothers you, you can soak the onion halves in water for about 20 minutes. This will reduce the pungency and prevent your eyes from becoming teary when you slice them.
  • The flavors of this salad intensify over time, so making it a few hours ahead or even a day before serving can enhance the taste. 
  • Store any leftovers in an air-tight container in the fridge for up to a week. The onions will continue to pickle and soften as they sit. 
  • While this recipe calls for red onions, feel free to experiment with other onion varieties for different flavors. However, remember that each type of onion has a distinct flavor and level of sweetness, which can alter the overall taste of the dish.
  • Use a high-quality extra virgin olive oil for the best flavors. Low-quality oils can introduce an unwanted bitter or rancid flavor to salad dressings. 
  • If you want to add an extra pop of brightness to the flavor, try adding a splash of red wine vinegar to the mix for this raw onion salad.

FAQ

Can I use a different type of onion for sumac onions?

Yes, you can use a different type of onion for sumac onions. While red onions are commonly used, other onion varieties, such as white onions, yellow onions, or shallots, can be used as well. The delicate flavors of the dish will still be there without the color and strong taste of red onions in the salad.  

If you try the recipe, please take a moment to leave a comment and rating. I love hearing from you and it also helps other readers who are thinking of making the recipe.

Recipe

Image showing sumac onions served on a white plate.

Turkish Sumac Onions Recipe (Sumac-Marinated Red Onions)

Add some zing to your grilled meats with this 5 minute red onion salad, featuring thinly sliced red onions tossed with sumac, fresh parsley, and lemon juice for a bright, refreshing taste. 
5 from 1 vote
Print Pin Rate
Course: Side Dish
Cuisine: Middle Eastern
Keyword: Marinated sumac onions recipe, Sumac onions
Prep Time: 5 minutes minutes
Total Time: 5 minutes minutes
Servings: 4
Calories: 99kcal
Author: Geetanjali

Equipment

  • Knife
  • Bowl

Ingredients 

  • 3 medium size red onion thinly sliced
  • 1 tablespoon sumac powder
  • 2 tablespoons fresh lemon juice
  • ¼ cup fresh parsley finely chopped
  • ½ teaspoon red chili flakes
  • ½ teaspoon salt or to taste
  • 2 tablespoons extra virgin olive oil
Get Recipe Ingredients

Instructions

  • To prepare the onions, peel and cut the onions into halves. Slice the onions thinly using a sharp knife or a mandoline slicer for even slices. Transfer the sliced onions to a large bowl. If raw onion's sharpness bothers you, you can soak the onion halves in water for about 20 minutes. This will reduce the pungency and prevent your eyes from becoming teary when you slice them.
  • Finely chop parsley and put them in the same bowl.
  • Add sumac, salt, red chili flakes, lemon juice, and olive oil. Mix everything.
  • Taste and adjust the seasoning as needed.
  • The sumac onions are ready to serve. You can serve them immediately or let the onions marinate for at least 30 minutes to allow the flavors to meld together before serving.

Notes

  • When making these sumac pickled onions, it's important to taste and adjust the seasoning to your liking. This ensures the flavors are just right and match your taste.
  • While slicing the onions, aim for thin slices, as they absorb the flavors more and provide a better texture in the salad. 
  • If raw onion's sharpness bothers you, you can soak the onion halves in water for about 20 minutes. This will reduce the pungency and prevent your eyes from becoming teary when you slice them.
  • The flavors of this salad intensify over time, so making it a few hours ahead or even a day before serving can enhance the taste. 
  • Store any leftovers in an air-tight container in the fridge for up to a week. The onions will continue to pickle and soften as they sit. 
  • While this recipe calls for red onions, feel free to experiment with other onion varieties for different flavors. However, remember that each type of onion has a distinct flavor and level of sweetness, which can alter the overall taste of the dish.
  • Use a high-quality extra virgin olive oil for the best flavors. Low-quality oils can introduce an unwanted bitter or rancid flavor to salad dressings. 
  • If you want to add an extra pop of brightness to the flavor, try adding a splash of red wine vinegar to the mix for this raw onion salad.
 

Nutrition

Calories: 99kcal | Carbohydrates: 9g | Protein: 1g | Fat: 7g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Sodium: 300mg | Potassium: 154mg | Fiber: 2g | Sugar: 4g | Vitamin A: 392IU | Vitamin C: 14mg | Calcium: 26mg | Iron: 0.5mg

Nutrition Disclaimer:

Nutrition information is a general estimate only. Actual values may vary depending on the specific ingredients and brands used. For the most accurate information, please consult a registered dietitian or use your preferred nutrition calculator.

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Hi, I'm Geetanjali! I am the cook, photographer, and author behind Spoons Of Flavor. I focus on simple, affordable, and easy-to-follow recipes for everyday life.

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