After getting a jar of sumac from The Spice House, I couldn't wait to try it out. After pondering compatible flavors, this is what I came up with.
Submitted by: Joanna from Nashua, NH
Yield: Makes enough for about 1 lb meat
Mix all ingredients into a thick paste and rub into whatever meat you are using.
This makes divine grilled lamb, but I would expect that it would also be good with chicken, burgers, or even fish.