Which New Year's Eve celebration in Denmark is traditionally associated with smashing old plates and glasses?

Danish New Year's Eve is traditionally associated with smashing old plates and glasses.

In the Danish custom, people may throw or break unwanted crockery against the doors of friends and neighbors. The practice is traditionally interpreted as a gesture of friendship and good luck: a household with many broken dishes outside its door could be seen as having many friends.

The tradition is often described alongside other Danish New Year's customs, including jumping from a chair at midnight to “jump” into the new year. Fireworks, festive meals, and the televised New Year's address by the monarch are also important parts of the Danish celebration.

The crockery custom should not be confused with ordinary vandalism or with a universal Danish practice. It is a folk tradition whose popularity and form vary by household and generation, and modern concerns about safety and cleanup can limit it. Descriptions of the custom generally refer to old or inexpensive dishes rather than valuable tableware.