1 c. soft butter (2 sticks)
2/3 c. sugar
3 egg yolks
1 tsp. flavoring (almond or vanilla)
2 1/2 c. flour, sifted

Mix thoroughly the first 4 ingredients. Then work in the sifted flour. Add additional flour, if needed, to make dough stiff enough to go through cookie press. Drop onto ungreased cookie sheet.

Bake at 400°F for 7 to 10 minutes, just until cookie dough is set but not browned. Remove on cookie rack. Store in closed container.