Iceberg has a good shelf-life and can be kept for up to seven days in the salad drawer of the refrigerator.

By growing your own ... such as 'Cos', 'Iceberg' and 'Butterhead', there are many others to try, including loose-leaf types and oak leaf lettuce, radicchio, rocket and endive.

There could be a shortage of lettuce in UK supermarkets as soon ... leafy salads at the same time as the heat has stopped the UK crop growing. Growers say they may have to import leaves from ...