As with Lebkuchen, these cookies will keep for a very long time in an airtight container. In fact, we think the flavor and texture improve over time.
Whisk together in a medium bowl:
Beat in a large bowl, or in a stand mixer with the paddle attachment, until very fluffy:
Add and beat until well combined:
Stir in:
Stir in the flour mixture in batches, alternating with:
Cover and refrigerate the dough for at least 8 hours, or for up to 2 days, to allow the flavors to blend.
Preheat the oven to 350°F. Grease or line 2 baking sheets or cookie sheets with parchment paper.
Shape the dough into ¾-inch balls and arrange about 1 inch apart on the prepared baking sheets. Bake until the cookies are lightly browned, 12 to 14 minutes, switching oven racks and rotating the sheets halfway through. Let cool for 2 to 3 minutes on the sheets, then roll the still-warm cookies in:
Transfer to a wire rack to cool completely.