As with a lot of Italian cooking, and I suppose this saying goes for all cooking really, the simpler the better. The marriage of blue cheese and rocket is a match made in heaven.Its best to try and use the Italian cheeses, as this really makes the dish authentic. I had a version of all these flavours together in Florence last year and it blew me away, they are fantastic. Just use a bag of rocket, they can be found in all the supermarkets these days and the semi dried pasta that cooks in 3 minutes. Watercress can also be used if you cannot find rocket.