On 10/30/2018 at 8:20 AM, KennethT said:Personally, I think there's a huge difference in flavor between pecorino romano and parmigiano reggiano - it's much sharper... I think doing this dish with parmigiano would be tasty, but it wouldn't be cacio e pepe.
Absolutely; it's pasta with pecorino and pepper. Pecorino, and the right pecorino for this dish, makes all the difference.
Here's how a Roman expert (from one of my favorite restaurants in Rome) makes the dish...