Petuh (Petu) is a mixed language^[1] of Flensburg, a mixture of German, Low German, Danish, and Southern Jutish spoken in Flensburg on the German–Danish border. It is High German in vocabulary (with some Danish concepts and loan translations), but it has Danish and Low Saxon grammar and syntax.^{[citation needed]} It originated in the 19th century and was still vibrant in the 1950s, but it is now on the verge of extinction.

You can help expand this article with text translated from the corresponding article in German. (February 2014) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 9,120 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Petuh]]; see its history for attribution. You may also add the template {{Translated|de|Petuh}} to the talk page. For more guidance, see Wikipedia:Translation.

You can help expand this article with text translated from the corresponding article in Dutch. (February 2014) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 377 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Dutch Wikipedia article at [[:nl:Petuh]]; see its history for attribution. You may also add the template {{Translated|nl|Petuh}} to the talk page. For more guidance, see Wikipedia:Translation.

Petuh is named after the partoutbillet (Danish for "season ticket",^[2] from French partout "everywhere" and billet "ticket, pass") granting unlimited access to the ferries in the Flensburg Fjord. The owners of such season tickets were known as petuhtants and were mostly older women who met on the excursion boats and in the cafes along the fjord.