Also tempting are prawns with watercress dressing: "For a seaside picnic it is nice to have some fish; in all probability you won't find it there, so take it with you. Buy ready peeled prawns, put them into a suitable jar, season with salt and pepper, and take in a separate bottle a generous quantity of French dressing made with lemon juice instead of vinegar into which you mix a good handful of very finely chopped watercress."
To finish up she suggests figs and creamed cheese: "Dried figs are delicious for a picnic; agreeable to bite on at the end of a meal. Have them with a homemade sour milk cheese, very slightly salted, or little French cream cheeses." Recipes from Summer Cooking (first published in 1955) by Elizabeth David, Penguin Books.
Where to go
* Bourton-on-the-Water: Gloucestershire village known as the "Venice of the Cotswolds", complete with motoring museum.
* Beaulieu: palace house, abbey and national motoring museum in the New Forest, Hampshire. Permanent home of the Shell Art collection and with reconstructed 1930s petrol station. A fine site for picnics.
* Charnwood: local heritage museum in Loughborough, Leicestershire.
Exhibition of Shell art runs until end of August. The surrounding Queen's park is excellent for picnics.
* Other Shell destinations include: Kimmeridge Bay, Dorset, a World Heritage coastline adorned with the now precarious Clavell tower, painted by Paul Nash; Savernake Forest, Wiltshire, private forest near Marlborough with public access (the monument to George III was painted by Szegedi Szuts); Newlands Corner, Surrey. John Armstrong captured the spirit of this popular picnic spot on the Albury Downs in 1936.