This section is from the book "The Golden Age Cook Book", by Henrietta Latham Dwight. Also available from Amazon: Golden Age Cook Book.
Take from a pint of green peas two heaping tablespoonfuls and set aside. Put the rest in a saucepan with half a white onion, in boiling water. Cover tightly, letting them cook until quite tender, then mash through a puree sieve with the water in which they were boiled, and using a little more to take out all that is good of the peas through the sieve. Put back on the stove, rub a good heaping tablespoonful of butter with a small tablespoonful of flour and add to the puree of peas. Have a heaping tablespoonful of turnips and two of carrots cut into dice and cooked in as little water as possible, and the two tablespoonfuls of peas cooked until tender, add to the soup with half a teaspoonful of sugar and pepper and salt to taste. Let all this cook together while enough milk to make the soup the proper consistency is coming to a boil. Mix together, add a teaspoonful of finely minced parsley, pour into the tureen and serve.
Put one quart of green peas over the fire in three quarts of boiling water with three French carrots, a small turnip cut into dice and a small white onion chopped. Cover tightly and let the vegetables cook until tender. Rub two ounces of butter with a small tablespoonful of flour, add a little of the soup to this to thin it and then stir all together, add an even tablespoonful of finely minced parsley, an even teaspoonful of sugar, and salt and pepper to taste; let it come to a boil and then serve.
 
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