This section is from the book "Practical Cooking And Serving", by Janet McKenzie Hill. Also available from Amazon: Practical Cooking and Serving: A Complete Manual of How to Select, Prepare, and Serve Food [1919].
(Annie P. Doughty, Boston)
1 tablespoonful of mustard. 1 cup of vinegar. 1/4 cup of sugar. 1 cup of sweet or sour cream. 1/4 cup of butter. 3 beaten eggs. 1 teaspoonful of salt. A few grains of cayenne.
Cream together the butter, sugar, and spices; add the beaten eggs and cook in the hot cream; when the mixture begins to thicken, add the vinegar, a few drops at a time, until all is used. Beat the mixture constantly and remove from the water, occasionally, to avoid overheating.
 
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