The legacy railway "Küstenbahn Ostfriesland" in Norden sometimes uses a grey and blue covered freight car of class "Karlsruhe" in its trains which advertises the well-known tea company "Onno Behrends". The "Schwarze Friese" or "Black Frisian" is a tea blend which lives up to its name. The combination of the very pronounced bitterness and the fine aroma is particularly popular with East Frisians. Real connoisseurs enjoy this tea with cream and rock candy.
