Kostelski želodec is a traditional dish originating from the town of Kostel. This typical Easter dish is made with a combination of smoked or dry-cured pig stomach or colon, stale bread, yeast, eggs, smoked ham, bacon, salt, and pepper. The pig stomach is soaked in lukewarm water until tender, and it's then stuffed with a mixture of cubed bread, bacon, and ham, eggs, salt, pepper, and yeast.

Once stuffed, the stomach is sewn shut, and it's then roasted in a greased roasting tin. Interestingly, some cooks like to parboil the stomach before it's roasted. In Kostel, almost every household has their own way of preparing the dish.