Buy sumac from a reputable supplier, as there are varying grades. Very bright sumac may have been blended with salt and oil to make it look and taste better, while very dark, gritty sumac has more ground seed in it, which is tasteless.
Store in an airtight container away from heat, light and humidity. Properly stored, it should last for up to 18 months.
Tips & Tricks:
Sprinkle sumac over roasting tomatoes, lamb fillets and tuna before cooking. Add it generously to salad vegetables such as avocado, asparagus, leaf salads and tomatoes.