1 1/4 c  Sugar
1 c  Butter,softened
3    Large egg yolks,beaten
1 ts Vanilla extract
2 1/2 c  Sifted all-purpose flour
1 ts Baking soda
1/2 ts Cream of tartar

Preheat oven to 350 degrees.Lightly grease two cookie sheets.Cream sugar
and butter together until light.Beat in yolks and vanilla.Sift together the
measured sifted flour,baking soda and cream of tartar,then fold into the
butter sugar mixture.Form dough into walnut size balls.Place 2″ apart on
the cookie sheets.Do not flatten.Bake for about 11 minutes,until tops are
cracked and just turning color.Cool on wire rack.Makes 4 dozen.