Cut up the bean and pound with the sugar in a mortar, sift and pound again until all is a fine powder. Mix the alcohol and rose water; put the vanilla in a paper filter, pour over it a little of the liquid at a time until all is used; filter again if not all is dissolved. Paper filters may be obtained at any of the large drug stores. The extract may be darkened by using a little caramel.
The Golden Age Cook Book (1898).