Sauté a cup of finely chopped white onions in a stick of butter until clear; stir in 3 tablespoons flour. With grace and beauty, blend in a cup and a half of milk mixed with an egg yolk. Stir until smooth and thick. Remove from heat, add six sliced hard-boiled eggs, two tablespoons grated hard cheese, cayenne for heat, and paprika for color. Salt to taste. This recipe serves about eight people.