3 1/2 c. sifted all-purpose flour
1/2 tsp. baking powder
1/4 tsp. salt
3/4 c. softened butter
1 c. sugar
1 egg
1 egg yolk
1 tbsp. grated lemon rind
3 tbsp. lemon juice
Butter
Sugar

Heat oven to 375 degrees. Sift flour, baking powder and salt together; set aside. Beat butter, 1 cup sugar, egg, egg yolk, lemon rind and juice together in a bowl, until light and fluffy; mix in the sifted ingredients. Pinch off small pieces of dough; roll gently between palms of hands into balls about 1" in diameter. Place 2" apart on a lightly greased cookie sheet. Butter bottom of a water glass; dip in sugar; press cookies down carefully until about 1/2" thick. Bake 12 to 15 minutes. Transfer to wire racks.