Step 4. Cut ¼"-sized discs from log and place on baking sheet. Using a pastry brush or back of a spoon, lightly brush each cookie with a slightly beaten egg white. Sprinkle lightly with sugar.
Step 5. Bake cookies until light golden, about 10-12 minutes. Cool pan on rack for 5 minutes. Carefully remove cookies onto rack with a spatula. Cool completely.
After rolling dough into a log, you can place in freezer for up to one month. When ready to bake, thaw dough and slice and bake according to recipe instructions.