I found this recipe in Vegetarian Cooking for Everyone. It appealed to me immediately when I saw sumac in the list of ingredients - a spice I love but can't find much use for. The other main ingredients - cucumber, tomato, pepper, and herbs - are widely available right now. Just reading the recipe made me realize that sumac is the spice in the side salads at Sahara - I have been trying to figure this out for years. When I tasted the salad, it was confirmed. I followed the recipe except for excluding the mint, and I used two small yellowish-orange peppers instead of the green ones called for. I also skipped the toasted pita. I don't have any pita, and I don't like soggy pita either. I ate this with a fork.
This is a bright, simple, flavorful summer salad. I think it would be perfect for a picnic. I expect to be making this again soon.