The Element Encyclopedia of Witchcraft: The Complete A-Z for the Entire Magical World - Judika Illes 2005
Food and Drink
Lambswool is a traditional Irish Halloween drink. Various recipes exist. The basis of the potion are roasted, crushed apples, which are added to milk, hot spiced ale, cider, and/or wine. Sugar is added as desired. Bits of toast may be added to the drink, too.
The name “Lambswool” is believed to be a corruption of the Irish Gaelic La Mas Nbhal or “Feast of apple gathering.” Pronounced “Lammas-ool,” it eventually evolved into “lambs wool.”
See also Beltane Caudle.