According to a well-known domestic scientist, the only things which should find their way to the garbage pail are:
Egg shells—after being used to clear coffee.
Potato skins—after having been cooked on the potato.
Banana skins—if there are no tan shoes to be cleaned.
Bones—after having been boiled in soup kettle.
Coffee grounds—if there is no garden where they can be used for fertilizer, or if they are not desired as filling for pincushions.
Tea leaves—after every tea-serving, if they are not needed for brightening carpets or rugs when swept.
Asparagus ends—after being cooked and drained for soup.
Spinach, etc.—decayed leaves and dirty ends of roots.
If more than this is now thrown away, you are wasting the family income and not fulfilling your part in the great world struggle. Your government says that it is your business to know what food your family needs to be efficient; that you must learn how to make the most of the foods you buy; that it is your duty to learn the nature and uses of various foods and to get the greatest possible nourishment out of every pound of food that comes to your home.
Taken from "Foods that will win the war and how to cook them". Copyright 1918
