Cut beets in strips, cover with water and let cook until tender, add citric acid (sour salt) and a little sugar to make sweet and sour, a little salt, and the sour cream. Serve cold. Sweet cream may be used and while hot gradually poured over the well-beaten yolks of two eggs, keeping the soup over the stove and stirring all the time until thick and smooth. Remove from stove and serve cold.
The International Jewish Cook Book (1919).