Cologne dialect Blutwurst served with raw pickled onion (the Musik), rye bread and mustard. A Brauhaus snack staple and the canonical bar food alongside cold Kölsch.

Flönz is the Kölsch dialect word for Blutwurst (blood sausage), and 'Musik' is the city's polite way of describing what the raw onion does in the stomach afterwards. The combination became a Brauhaus snack staple in the 19th century working-class quarters, and stayed on the menus through the 20th century even as the wider Cologne food scene gentrified. Today it is the standard mid-morning second-breakfast and the cheapest order on most Brauhaus snack lists.

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