Having studied German at university and having lived in Cologne for three years when I was younger, I take some things for granted. Like Eau de Cologne for example. I know its origins. I mean why is "water from Cologne" a standard phrase when describing perfume?
Some of you may have heard of the brand 4711. It used to be sold a lot but I hardly ever see it on shop shelves these days. It was considered the genuine eau de cologne and used to boast "echt" ( English 'genuine' or 'original') on its labels. But why 4711?
It was originally created in 1792 by Wilhelm Mühlens in Cologne, Germany. According to legend the secret formula was a wedding gift from a Carthusian monk, originally intended for both internal consumption (mixed with wine) and external application to promote health. When in 1794 the invading Napoleonic army renumbered the chaotic streets of Cologne, the house in Cologne's Glockengasse was renumbered 4711. However in the early 19th century, Napoleon Bonaparte issued a decree requiring the disclosure of all ingredients for internal medicines, so Mühlen, unwilling to reveal his secret formula, repurposed it strictly for external fragrance.