1 c. shortening (half butter)
2 egg yolks
1 tsp. cream of tartar
1/2 tsp. vanilla
1 1/2 c. sugar
1 tsp. baking soda
2 c. flour
1/2 tsp. lemon juice

Chill and roll in balls. Roll in sugar. Bake at 350 degree oven for 10 minutes.