Pinkel is a smoked Kaszanka, which is a type of sausage. It is eaten mainly in northwest Germany, especially the region around Oldenburg, Bremen and Osnabrück as well as in East Frisia and Friesland. From Wikipedia
The CDU politician and Schleswig-Holstein's Ministerpräsident succeeds Defense Minister Boris Pistorius in the symbolic role at the Oldenburger Grünkohl-Essen.