6 egg yolks.
5 cups of sifted flour.
2 cups of sugar.
1 cup of butter.
1 cup of shortening.
2 tablespoons of sour cream.
1 ½ teaspoon of vanilla.

Make as for pie crust; then roll out and cut with a cookie cutter.

Bake at 350°F (175°C) for 14 minutes.