There is a PAAYE WALA on a rerhi in front of Jilani run by a guy named Tariq. You go there at 6 AM and see the queue there. I went there 4,5 times and I have seen people jostling each time as he sells out so quickly.
He sells bare paaye and the best I have tasted in Pindi.
I have his number and I call him before I go.
My brother recommended it, and I took 6 of my friends there (without ever trying it alone first) raving about its rumored taste of Kofta Currie, and Kabli Pulao etc. It was one of the most embarassing dinners. I have stopped trusting anyone unless I taste the food myself.
About Kala Khan, I heard numerous times "Bhai 4 baje suba jaao tu milti hai aur us k baad tu khare hone ki jaga nai hoti".
A couple of weeks back, I went there and there was hardly a soul there. His Nihari is no better than Rahat Cafe in Saddar opposite Varan stop.
Give you another story. The guy at Nagina burger in F10 claims to be a relative of this Mamu Burger.