Put an ounce of butter in a tin saucepan, set it on the fire, and when
melted, turn into it two tablespoonfuls of flour, thoroughly mixed with
half a pint of milk; stir with a wooden spoon, boil gently for about
twelve minutes, stirring the while; take off, turn into a bowl, add salt
and sugar to taste, and use.
If wanted richer, an egg may be mixed with the flour and milk, or a yolk
of egg may be added as soon as taken from the fire.