In a large bowl, cream butter and brown sugar until light and fluffy. Beat in molasses, egg, vanilla and lemon zest. In another bowl, whisk flour, ginger, baking powder, cinnamon, baking soda, salt and cloves; gradually beat into creamed mixture. Divide dough in half. Shape each into a disk; wrap in plastic. Refrigerate 30 minutes or until easy to handle.
Preheat oven to 350°. On a lightly floured surface, roll each portion to 1/4-in. thickness. Cut with a floured 4-in. gingerbread man cookie cutter.
Place 2 in. apart on greased baking sheets. Bake until edges are firm, 7-9 minutes. Remove from pans to wire racks to cool completely. Decorate as desired.
To decorate with Royal Icing: In a bowl, combine 2 cups confectioners' sugar, 2 tablespoons plus 2 teaspoons water, 4-1/2 teaspoons meringue powder and 1/4 teaspoon cream of tartar; beat on low speed just until combined. Beat on high 4-5 minutes or until stiff peaks form. If desired, tint with food coloring and pipe with a pastry bag and small pastry tips. Keep unused icing covered at all times; beat again on high to restore texture as necessary. Yield: 1 cup icing.