The Swedish dish known for its meatballs served with lingonberry is called "Köttbullar." These meatballs are typically made from a mix of ground beef and pork, seasoned with spices, and served with a creamy gravy. The dish is traditionally accompanied by lingonberry sauce, which adds a tart and sweet flavor that complements the savory meatballs. Köttbullar is often enjoyed with mashed potatoes and pickled cucumbers, making it a beloved comfort food in Sweden. It has gained international popularity, especially after being featured in establishments like IKEA, where it is often served in their cafeterias.