"Weißwurstäquator" (German pronunciation: [ˈvaɪsvʊʁst.ɛˌkvaːtoːɐ̯] ^ⓘ; lit. 'white sausage equator') is a humorous term describing the supposed cultural boundary separating Southern Germany from the northern parts, especially Bavaria from Central Germany.^[1]

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It is named for the Weisswurst sausage of Bavaria, and has no precise definition. A popular one is the linguistic boundary known as the Speyer line separating Upper German from Central German dialects, roughly following the Main River; another is a line running further south, more or less along the Danube, or between the Main and the Danube, roughly along the 49th parallel north circle of latitude.^[2]

• Röstigraben
• Barassi Line