Dobble stone, in English folk magic, is a stone having a natural or artificial hollow on its upper surface, into which offerings are poured. To cast a traditional spell for rising a wind, milk is poured into the dobble stone from the direction out of which the desired wind is to come, and then left for the cats to drink; in gratitude, the cats will raise the desired wind. Some suggest this spell was originally invoked by the Nordic goddess Freya, whose sacred animal was the cat; however, no reference to this or any other Pagan deity is associated with the spell. A.G.H.
Greer, John Michael. The New Encyclopedia of the Occult. St. Paul. MN. Llewellyn Worldwide. 2005. p. 135