The basil that grows on the steep slopes above Genoa in Northern Italy is not like any basil grown anywhere else in the world. It has a sweetness to it that is delicate and as a result it doesn’t travel well. However, British growers are starting to work with Ligurian basil seeds and this is, slowly, becoming available.
The most important thing to remember is that basil needs to be treated with care. A lot of the bitterness of pesto can come from overworking or cutting basil in the