(Recipe #8, page 255)
A small soup-bowl of thick sour cream (may substitute fresh milk), 4 eggs, 2 TBS sugar, 1 tsp cinnamon.
Beat sour cream or milk well with whole eggs [and other ingredients]. When the plum tart is almost finished baking, add icing to the tart by the spoonful.
[Note: Davidis omitted the instructions to add the remaining ingredients. Also, one must assume that the ‘icing’ or Guss will be a sort of meringue, baking along with the plum tart until it is finished.]