How to Bind Soups

Cream soups and purées, if allowed to stand, separate, unless bound together. To bind a soup, melt butter, and when bubbling add an equal quantity of flour; when well mixed add to boiling soup, stirring constantly. If recipe calls for more flour than butter, or soup is one that should be made in double boiler, add gradually a portion of hot mixture to butter and flour until of such consistency that it may be poured into the mixture remaining in double boiler.