The original sandwich was held in Berlin in 2005 to commemorate Van Haeringen’s book, and led to a conference series devoted to the comparative study of Dutch, German and English.
- Berlin (September 30–October 1, 2005)
- Sheffield (September 12–13, 2008)
- Oldenburg (September 17–18, 2010)
- Leuven (January 11–12, 2013)
- Nottingham (April 24–25, 2015)
- Münster (March 16–18, 2017)
- Amsterdam (May 23–24, 2019)