No mask. Very sour. People use sumak/ sumac instead of lemon in meals and salads in Antep. (me too)
And we use it as spice too..
And we have other "ekşi" sauce..
Discussion
I love sour. I think I will like Sumak more than Nar. Nar was very sweet.
Then you will definitely love it. If you find sumac spice, you can get a sour sauce if you soak it in a little hot water. Of course not like the other. You can use it in some olive oil dishes (artichoke, stuffed...) and salads.