Eau de Cologne is a diluted, scented mixture used in perfumery, and is often known simply as cologne. Eau de cologne is typically the weakest in terms of aroma, of the three main perfume dilutes: eau de cologne, eau de toilette, and eau de parfum. Hailing from 18th Century Germany, the term is largely used to generically refer to scented compositions that have an aromatic concentration of less than 10%, with 5% usually being the preferred level. The essential oils and other extracts used in the production of the formulation determine how strong the composition will be, but the aroma is generally less intense than eau de parfum and eau de toilette fragrances. The makeup is typically mostly made up of ethanol or a water diluted ethanol solution. Eau de cologne is almost always primarily made up of citrus extracts and oils, such as those from the lemon, orange, lime, and grapefruit tree, with bergamot and neroli being frequent ingredients used for the production of colognes. It is also very common for other, non-citrus elements to be added to the composition, with jasmine, lavender, rosemary, and even tobacco being extensively used as additives.