This section is from the book "Dainties", by Mrs. S. T. Rorer. Also available from Amazon: Dainties.
1/2 cupful of butter
1 cupful of sugar
1/2 cupful of thick sour cream
3 eggs
2 1/2 cupfuls of flour
1 level teaspoonful of baking soda
1 ounce of chocolate
3 cupfuls of flour
1 teaspoonful of baking powder
1/2 cupful of currants
Beat the eggs, without separating, until light; add the sugar and butter. When very, very light, moisten the baking soda in a little cold water, add it to the cream, stir it into the mixture, and add the chocolate, melted. Sift the baking powder and flour, stir them in, add the currants, floured, and drop by teaspoonfuls on the bottom of a greased baking pan. Bake in a brisk oven ten or fifteen minutes.
 
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