I have a summer job in the local museum and I have access to the exhibits. On display are some old cookbooks and I often have time to browse them. My favorite is dated 1928. This recipe comes from that book.
Sift dry ingredients together in a bowl.
Cut in the butter.
Stir in the currents.
Mix the beaten egg yolk with the sour cream and stir into the dry mix to make a smooth dough.
Turn onto a lightly floured board and knead lightly for 10 seconds.
Pat or roll the dough into two 6 inch rounds 1/2 to 3/4 inch thick.
Score each round into quarters but do not cut through.
Bake in hot oven (425 degrees) for 15 to 18 minutes.
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