Italian sauces company Cirio is boosting the premium profile of pesto with the ­addition of white and black pesto variants to its range.

The white variant is a traditional green pesto with more ricotta, parmigiano reggiano and pecorino romano cheeses, while the black pesto is a blend of black olives and walnut. The products use basil sourced from Liguria. They are launching into Waitrose (rsp: £1.69 for a 190g jar).