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.
Grate one young turnip, about two tablespoonfuls; add a half cupful of cold water, cook in a double boiler fifteen minutes, add a saltspoonful of salt, half a cupful of milk, and if admissible, a dash of pepper. When hot, add a level teaspoonful of cornstarch, moistened in a little cold milk; stir and cook for five minutes, add a teaspoonful of butter and serve. Omit cornstarch for diabetic persons.