This is a traditional Middle Eastern salad. It's probably the simplest rocket salad you'll ever come across. Rocket is layered with onions, mushrooms and tomato, then drizzled with a lemon-oil dressing.
Sumac comes from dried berries that are grown in the Mediterranean. They taste sour and fruity. You can find them in Middle Eastern speciality stores or online.
I just bought this dish from my local supermarket in Qatar today. It was so delicious I had to find the recipe. It also goes by the name Jirjir as the translation is literal from Arabic - 25 Nov 2007 (Review from Allrecipes US | Canada)
We thought this was OK. It wasn't bad; it just wasn't great. I used shallot instead of onion because I prefer the milder flavor; otherwise I followed the recipe exactly. It just seemed to be missing something. I think some fresh herbs, like parsley and mint, would have helped, and maybe some garlic. Thanks, anyway. - 04 Nov 2009 (Review from Allrecipes US | Canada)
DH liked this, maybe he has had it before. I didn't really like it but I will make it again for DH. - 09 Sep 2010 (Review from Allrecipes US | Canada)