About 20 minutes before deep frying, fill deep pan 1/2-2/3 full with vegetable shortening or cooking oil for ddep frying. Heat slowly to 365 degrees. When using an automatic deep fryier, follow manufacturer's directions for the amount of fat and times.
Sift together into bowl:
2 cup sifted flour
1 T sugar
12 t slt.
Make a well in the center of dry ingredients and pour in a mixture of:
3 egg yolks, slightly beaten
1/2 cup thick sour cream
1/2 t vanilla extract
Blend ingredients until all the flour is moistened.
Let dough rest 1-2 minutes. Pour dough out onto the lightly floured surface and knead only until ingredients are well blended. shape dough into a smooth ball; roll dough or lightly floured surface into a rectangle 1/8" thick.
Roll 1/2 of dough at a time. With floured knife, cut dough; cut dough into diamond-shaped pieces. Make a 1" lengthwise cut into the center of each diamond; pull one end through slit, twisting alightly.
Deep-fry only one-layer of cookies at a time; do not crowd. turn cookies with fork as they rise to surface and several times during cooking, but do not pierce.
Fry about minutes or until lightly browned. Drain, Sprinkle cookies with sifted confectioers sugar.