The Book of Household Management by Mrs. Beeton

lettuces, a small bunch of parsley, 2 handfuls of spinach, 3 pieces of bread-crust, 2 blades of mace, salt and pepper to taste, the yolks of 2 eggs, 3 teaspoonfuls of vinegar, 2 quarts of water. _Mode_.--Melt the butter in a stewpan, and put in the onions to stew gently for 3 or 4 minutes; then add the celery, spinach, lettuces, and parsley, cut small. Stir the ingredients well for 10 minutes. Now put in the water, bread, seasoning, and mace. Boil gently for 1-1/2 hour, and, at the moment of serving, beat in the yolks of the eggs and the vinegar, but do not let it boil, or the eggs will curdle. _Time_.--2 hours. _Average cost_, 6d. per quart. _Seasonable_ all the year. _Sufficient_ for 8 persons. [Illustration: LETTUCE.] THE LETTUCE.--This is one of the acetarious vegetables, which comprise a large class, chiefly used as pickles, salads, and other condiments. The lettuce has in all antiquity been distinguished as a kitchen-garden plant. It was, without preparation, eaten by the Hebrews with the Paschal lamb; the Greeks delighted in it, and the Romans, in the time of Domitian, had it prepared with eggs, and served in the first course at their tables, merely to excite their appetites. Its botanical name is _Lactuca_, so called from the milky juice it exudes when its stalks are cut. It possesses a narcotic virtue, noticed by ancient physicians; and even in our day a lettuce supper is deemed conducive to repose. Its proper character, however, is that of a cooling summer vegetable, not very nutritive, but serving as a corrective, or diluent of animal food. MILK SOUP (a Nice Dish for Children).