How to Make It
Preheat oven to 350°.
Lightly spoon flour into dry measuring cups; level with a knife. Combine flour and the next 4 ingredients (flour through salt) in a large bowl, stirring with a whisk. Stir in crystallized ginger. Combine rind, juice, and whole eggs; add to flour mixture, stirring until well blended (dough will be crumbly). Turn dough out onto a lightly floured surface; knead lightly 7 or 8 times. Divide dough in half. Shape each portion into a 9-inch-long roll. Place rolls 6 inches apart on a baking sheet coated with cooking spray; flatten each roll to a 1-inch thickness. Combine water and egg white, and brush over rolls. Sprinkle rolls evenly with 1 tablespoon sugar.
Bake at 350° for 20 minutes. Remove rolls from baking sheet; cool 10 minutes on a wire rack. Cut each roll diagonally into 15 (3/4-inch) slices. Carefully stand slices upright on baking sheet. Reduce oven temperature to 325°; bake 20 minutes (cookies will be slightly soft in the center but will harden as they cool). Remove from baking sheet; cool completely on a wire rack.