This section is from the book "Mrs. Rorer's Diet For The Sick", by Sarah Tyson Rorer. Also available from Amazon: Mrs. Rorer's Diet For The Sick.
Substitute lentils for beans, and proceed precisely the same as for soup of dried beans. Lentils are more easy of digestion than either beans or peas.
Revalenta Arabica is the name given to red lentil flour sold in the markets of the United States.
It contains more than meat value, and is quickly made into a soup the same as bean flour. All these soups are exceedingly good for nursing mothers.
One Serving
Take six or eight outside stalks of celery, pare the root and cut it into slices. Put a teaspoonful of sugar in the bottom of the saucepan, let it brown thoroughly, then add one pint of cold water and a half pint of finely-chopped celery, using a few of the green tops. Cover the saucepan, simmer gently for a half hour, then strain, pressing the celery. Reheat, add a palatable seasoning of salt, turn the broth into a bouillon cup, put a tablespoonful of whipped cream on top and serve.
This is exceedingly good for nervous patients, and if well made is appetizing.
One Serving
Put a teaspoonful of sugar in the bottom of a saucepan, let it burn, add one tablespoonful of chopped onion, shake until the onion is quite brown, add a tablespoonful of olive oil and a half pint of water. Sprinkle into this as soon as it boils one tablespoonful of rolled oats, cover and simmer gently thirty minutes, add a half teaspoonful of celery salt and a dash of pepper; strain, serve in a cup with a tablespoonful of whipped cream on top.
 
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