If you're a fan of Biryani rice, then you should reconsider!
Located at the Diplomatic Precint (aka Precint 15) is probably the best restaurant in Putrajaya; Mr Kabab (yes, with an "a" instead of an "e") & Biryani. It started out small and now has taken 4 shop lots in just a few years.
The restaurant serves Middle Eastern-Pakistani cuisine, which is mostly (you guessed it) kebabs, mandi and biryani rice (about RM13 and up) and nan breads and tandoori chicken. Not the biggest menu in the world but what they lack in variety, they make up in taste.