Vanillekipferl are an Austrian delicacy allegedly created by Viennese bakers to celebrate the Austrian victory over the Turks. Turning to Wikipedia, there is no mention of the cookie here under culinary legends spawned by the Battle of Vienna, and it should be noted that under the entry Vanillekipferl, Wikipedia informs us that the Hungarians defeated the Turks.
The dough can be rolled into balls before baking, but where is the symbolism in that? No, these are crescent-shaped like the crescent on the Turkish flag. So, eat and conquer! Unless you are Turkish. If so, put your own spin on them and eat them anyway, because they are very good.
Primary flavors are almond (a cup ground and mixed with the flour before the butter — a whole cup of that too! — is added) and vanilla. And part of the vanilla is in the powdered sugar coating which is actually vanilla sugar. And that takes time. A week, to be exact. A pound of sugar sits with two vanilla beans in an air-tight container and voilà: Vanilla sugar. Mmmm.