Boxer’s “Food for Excursions” is mainly a collection of carbohydrates, sweets, and fatty meats. Her suggestions include Riverside Sandwich, Sausage Sandwich, Potted Shrimp Sandwich, Toad Hall Steak Sandwich, Stuffed Eggs, River-Bankers Lunch, hard-cooked Eggs with Nutty spice island Mixture, Sausage Rolls Leafy Summer, Lettuce Snacks, Cornish pasties, Hot meat pasties, Rabbit pasties, Easy Meat Loaf, Very Easy Flapjacks, Flapjacks.
“River-Banker’s Lunch” calls for a wedge of French bread with butter, cheddar cheese, and tomato chutney is a proper picnic meal. Some other recommendations, which require very competent adult preparation, are sandwiches of sausages or steak, sausage rolls, potted shrimp, stuffed eggs, hard-boiled eggs, meatloaf, hot meat pasties, etc.
See Arabella Boxer. The Wind in the Willows Country Cookbook: Inspired by the Wind in the Willows by Kenneth Grahame (New York, 1983)