Salad-bag Pesto

Bagged salad is one of the most wasted foods in Britain, with over half of it ending up in landfill. I have had this recipe in mind since my first cookbook, A Girl Called Jack, and although it is something I make for myself on a regular basis, absorbed into my household as a common staple, it has never been committed to paper until now. Bags of salad can be expensive to buy full price, but they can o