This section is from the book "Beverages And Their Adulteration Origin, Composition, Manufacture, Natural, Artificial, Fermented, Distilled, Alkaloidal And Fruit Juices", by Harvey W. Wiley. Also available from Amazon: Beverages And Their Adulteration.
There are many other materials which are used for flavoring spirits, making a kind of gin. The most common substitute for the juniper is the sloe berry. The sloe berry is the fruit of the Prunus spinosa, or blackthorn. It is used very extensively in England and is regarded as making a very satisfactory gin. Its methods of manufacture are practically the same as for gin. Unless the term "sloe" is used in speaking of gin the juniper gin is always understood. Buchu is also used as a flavor for a beverage known as gin, and likewise coriander and other seeds. Whatever substance is used other than juniper, the name of the material must be prefixed to the gin in order to have it properly named.
 
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