Holiday Spirits

Holiday Spirits are an alcoholic beverage available during the Feast of Winter Veil seasonal event.

Source
During the Feast of Winter Veil, this item can be purchased for from:

Cooking

 * Winter Veil Egg Nog
 * Hot Apple Cider

Achievement
The Feast of Winter Veil cooking achievement, The Winter Veil Gourmet, uses two Holiday Spirits, one for each of two recipes: You must create these during the Feast of Winter Veil event to earn the achievement.
 * Winter Veil Egg Nog uses Holiday Spirits
 * Hot Apple Cider uses Holiday Spirits
 * Gingerbread Cookie does not need Holiday Spirits