The main even was the slå katten af tønden or 'hit the cat out of the barrel'. This involves children lining up and hitting a wooden barrel full of candy with the image of a black cat on it. Historically (and as recently as 100 years ago) there was a real black cat in the barrel, as beating the barrel was superstitiously considered a safeguard against evil.
After the barrel is broken, the game continues until the last piece of the barrel falls down. The one who breaks the barrel first causing the candy to pour out becomes kattedronning or "queen of cats", and the one who knocks down the last piece of the barrel becomes kattekonge or "king of cats".
To enable the very young kids to participate a second barrel was made of cardboard. See some pics below.
While the kids were battling it out the adults were enjoying hot drinks and cake, including the traditional fastelavns bun or shrovetide bun, a round sweet roll covered with icing. It was a lovely afternoon!