The town of Kreševo, located in Central Bosnia, has a long and illustrious history of mining and blacksmithing. Even during the time of the Bosnian Kingdom, the Kreševo ​​ore mountains were a significant source of income for the royal treasury. For centuries, the blacksmithing knowledge and skills have been passed down from generation to generation, so that today the Kreševo ​​horseshoe egg remains a lasting symbol of blacksmithing excellence and the preservation of the spirit of glorious past of this place. Today, ore is no longer mined in Kreševo, but the tradition of blacksmithing and shoeing eggs has been preserved. According to folk tradition, the art of shoeing eggs was a kind of test for every young blacksmith, an apprentice, before his marriage. Namely, if a young man knew how to shoe an egg, it was a sign of his maturity, or ability to support a family. When he passed the test with the recognition of his masters, the young blacksmith would place the shoed egg in the window, which was a sign of his readiness for marriage.

Today, various symbols and techniques are used to decorate eggs, but what they have in common is that the egg must be shoed.