Where Can I Buy It?
You can typically find sumac in the spice aisle or the international foods section of most grocery stores. For a wider selection, check out Mediterranean or Middle Eastern stores, where sumac is commonly available.
Also, you can use online shops. Try Amazon, specialty spice retailers, and Middle Eastern food websites.
Tip: When buying sumac, make sure it does not contain food coloring or citric acid in the ingredients. Look for products that list sumac and salt or just sumac as the ingredients.
As for the liquid version called sumac sauce (SUMAK Sour), unfortunately, it is not easy to find outside Turkey. However, if you come across it, the most famous Turkish brands are Arifoğlu and Kemal Kükrer.
How to Store It
To keep sumac powder fresh, store it in an airtight container or glass jars with tight lids. Place the container in a cool, dark place, away from direct sunlight and moisture.
Sumac typically lasts about one to two years. If it starts to lose its vibrant red color or the tanginess becomes weak, it might be time to replace it.