In his first mission, Henning takes over a German beginners' class to teach them the basics: the alphabet. German just wouldn't be the same without the ß and the umlauts: ä, ö and ü.

Stand-up comedian Henning Wehn takes over a German class and highlights the importance of the four additional German letters in the alphabet, the ß, ä, ü and ö. Where would Düsseldorf be ...

It comes from a 15-minute, black-and-white comedy sketch, in English with a British cast, but filmed in Hamburg in 1962. It's called Dinner for One, and it's been shown on German television ...