1 1/2 tsp. vinegar
1/2 c. milk
1/2 c. butter
3/4 c. granulated sugar
1 egg
1 tsp. shredded lemon peel
1 tsp. baking powder
1/4 tsp. soda
1 3/4 c. flour

Stir vinegar into milk. Cream butter and sugar until fluffy. Beat in egg and lemon peel. Sift dry ingredients; add to creamed mixture alternately with milk. Beat after each addition. Drop 2 inches apart on ungreased cookie sheet. Bake 12 to 15 minutes at 350 degrees.