Kołocz śląski, also known as kołacz śląski, is a rectangular cake with a weight of about 5-6 kilograms, produced in four varieties - one without a filling, and the other ones with an apple, cheese or poppy seed filling. It is made in the Opole and Silesian Provinces in Poland since the 10th century when it was traditionally baked exclusively by skilled women who would let neither draughts nor men into the room while the cake was being made (it was thought to be magical!).

It has a great role as a festive cake and it was even a guarantee that the newlyweds would be blessed with children if they ate it at weddings. Today, it is a custom to bring this cake to wedding guests a few days before the event. On the exterior, it is golden in color and sprinkled with icing sugar while on the interior it is either creamy yellow (cheese), dark grey (poppy seeds) or amber (apples).

Its surface holds a crumbly topping with a delicious, buttery aroma. A true hero of the Silesian cuisine, it is an essential part of various regional festivities and events.