1 c. butter
1 c. sugar
1 egg
2 1/2 c. sifted flour
1/2 tsp. baking soda
1 tsp. salt
2 tbsp. vinegar or lemon juice
1 tsp. vanilla
1 1/2 tsp. grated lemon rind

Cream butter and sugar until light and fluffy. Add egg and beat thoroughly. Add sifted dry ingredients, vinegar, and flavoring, and mix well. Drop teaspoonfuls on greased cookie sheets. Sprinkle a little granulated sugar on each cookie.

Bake in a moderately hot oven, 400 degrees for about 12 minutes or until delicately browned. Approximately 5 dozen.