4 c. sifted all-purpose flour
2 tsp. baking powder
1/2 tsp. baking soda
1/2 tsp. salt
2/3 c. butter
1 1/4 c. sugar
1/4 c. light molasses
2 eggs
1 tbsp. grated lemon peel

Onto waxed paper, sift together flour, baking powder, soda, salt and mace. In a large mixing bowl, cream butter and sugar. Add molasses. Add eggs and lemon peel, beating well. Beat in flour gradually. Divide dough into 2 parts; wrap each piece in foil and chill 4 hours or overnight.

On a well-floured board, roll out dough, one piece at a time to 1/8 inch thickness. Cut out shamrock pattern with cookie cutter or draw shamrock onto plastic lid, cut it out and use this as a pattern. Bake on lightly greased sheet at 400 degrees for 6-8 minutes or delicately browned.

When cool, frost with the Wearin' of the Green Frosting:

2 egg whites
2 c. sifted confectioners' sugar
Green food coloring

In a small bowl, with electric mixer, beat egg whites and sugar for 10 minutes or until very stiff and glossy. Tint frosting with enough food coloring to make it a bright green. Frost cookies. (Keep frosting covered with a damp cloth to prevent a crust from forming.) When frosting is quite dry, cookies may be piled on platters, separated with layers of waxed paper.