No matter what people in the rest of the world do to it, the classic pesto sauce of its birthplace in Genoa, Italy, has just seven ingredients: basil, pine nuts, Parmesan and pecorino cheeses ...

Following is a transcript of the video. Claudia Romeo: Today we're in Genoa, on the Italian Riviera. This city is famous for many things, like its ancient port, the aquarium, but most of all ...