Soak peas over night in cold water, and drain; add water or stock, and onion, and simmer about three hours or until peas are soft; press through a sieve; add milk and pepper, and thicken with bacon fat and flour blended together. Serve with croutons. If water is used in place of stock, add two slices of bacon and one and a quarter teaspoons of salt.
Better Meals for Less Money (1917).