Osteria Romana served us the best Italian dish we have eaten anytime, any where. That dish was a…read morestarter to share. Specifically, look at the menu and order the Rigatoni alla Gricia. It will tell you it is Rigatoni with Gricia sauce, pork cheeks, artichokes, and Pecorino cheese. The Rigatoni is perfectly al dente, and the sauce (the ingredients on the menu plus black pepper and starchy pasta sauce) is Heaven on Earth. It is also plenty for two as a starter. Before we even got very far into the dish, we placed an order for a second helping to go. That order is now in our fridge awaiting its role as our dinner tomorrow night. Yes, we had mains - Polpetta for my wife, sea bass for me. They were very very good, and ample. But, I still can't get the Rigatoni alla Gricia out of my mind. Lest I forget, I never give a five star rating to a restaurant for its food alone, no matter how wonderful. Jesus was our waiter, and he was fantastic. He was efficient, his timing was exquisite, and he was remarkably personable with a wonderful sense of humor. Bottom line is that, when in London on our next trip, Osteria Romana will absolutely be a dinner stop for these old folks.