Why do we eat duck or goose on November 10th?
We're having mortensaften because Martin Luther was born on November 10th and baptized on November 11th. He got his name after today's saint: Saint Martin of Tours, whom we in Denmark know as Morten Bisp.
Morten Bisp died on 11 November, which is why the day is called Mortensdag and the night before is Morten's Night.
Morten Bisp had a good reputation when he helped the poor and sick. The people of Tours would therefore choose him as bishop, but Morten Bisp was not interested in this head of information, and when the inhabitants of the city came to appoint him, he hid in a goose path.
It just did by the geese began to scare and revealed Morten Bishop, who was then revealed and had to assume the office of bishop of the city.
In revenge for the frightening geese that led to his appointment, Morten Bisp ordered that all households should slaughter at least one goose once a year and eat it on the day he was revealed.