Ingredients Seasonings Alliums Onion Sumac Onions Be the first to rate & review! Ground sumac adds a lemony flavor to these quick-pickled onions from Maydān restaurant. Versatile and bright, use them to top Maydān's Slow-Grilled Cauliflower with Tahina and Zhough. By Maydan, Washington, D.C. Published on May 20, 2021 Print Rate It Share Share Tweet Pin Email Active Time: 5 mins Total Time: 5 mins Yield: 2 cups Ingredients 1 tablespoon plus 1 teaspoon distilled white vinegar 1 medium-size red onion, thinly sliced lengthwise (about 2 cups) 2 teaspoons ground sumac Directions Bring vinegar to a simmer in a small skillet over low. Remove from heat. Toss together onion slices, sumac, and hot vinegar in a medium bowl until well combined. Refrigerate in an airtight container up to 5 days. Note Find sumac at Middle Eastern grocery stores or online at burlapandbarrel.com. Rate it Print