Glögg, gløgg, or glögi is a spiced, sometimes alcoholic drink, traditionally consumed during winter in Nordic countries, particularly around Christmas. Originating in Sweden but also associated with Denmark, Finland, Norway, and Estonia, it has a long history dating back to at least the 16th century. Originally, it was consumed by messengers and postmen traveling in cold weather. By the early 19th century, glögg became a common winter drink, often mixed with juice, syrup, and sometimes harder spirits.

In Finland, the term "glögi" comes from the Swedish word "glögg," which itself derives from "hot wine." During prohibition in the early 20th century, glögg consumption declined, but it regained popularity after Prohibition was lifted in the 1930s. By the 1950s and 1960s, glögg became a Fenno-Swedish tradition, later spreading to the broader Finnish population by the late 20th century.

In Estonia, Swedish-style glögi was introduced in the 1980s and 1990s via Finland, with local commercial production beginning in 1995. Glögg recipes vary but typically start with white or sweet wine or spirits like brandy or cognac, combined with spices such as cloves, cinnamon, cardamom, and ginger. Other ingredients may include citrus peels, raisins, or almonds. Non-alcoholic versions use fruit juices instead of wine. The drink is usually warmed before serving, but care is taken not to boil it if it contains wine or alcohol.

Overall, glögg is a traditional Nordic winter and Christmas drink, with diverse regional variations in preparation and ingredients.