Classic Culinary Arts:

Onion Soup Recipe

One quart of milk, six large onions, yolks of four eggs, three table- spoonfuls of butter, a large one of flour, one cupful of cream, salt, pepper. Put the butter in a frying-pan. Cut the onions into thin slices and drop in the butter. Stir until they begin to cook; then cover tight and set back where they will simmer, but not burn, for half an hour. Now put the milk on to boil, and then add the dry flour to the onions, and stir constantly for three minutes over the fire. Then turn the mixture into the milk and cook fifteen minutes. Rub the soup through a strainer, return to the fire, season with salt and pepper. Beat the yokes of the eggs well; add the cream to them and stir into the soup. Cook three minutes, stirring constantly. If you have no cream, use milk, in which case add a table-spoonful of butter at the same time.