Fresh basil leaves. If you don’t grow your own, you can usually find plants at the store that you can pot and grow yourself. Keep in mind, to make a batch, you’ll need about 50 leaves. One ...

Basil, pine nuts, garlic, olive oil, Parmesan, and sea salt - these are the ingredients for a "truly Italian" Pesto Genovese.

There are some rules, however: Passengers can take either one 500g jar, or two jars up to 250g. They must be flying directly from Genoa. And crucially, the pesto must be Genovese.