Top 8 pesto sauces tested

Fresh basil is now in the shops and makes a terrific sauce with pasta, says Roz Crowley.

Originating in Liguria where all the basic ingredients of the most famous one, Pesto alla Genovese, are located, there are regional variations called pesto with their own descriptive names.

Fresh basil is the first ingredient of the Genovese one and nuts are used to add a creamy texture. I have experimented with all types of nuts.