That the bark from the large Cassis tree was a gift from God was discovered as far back as 5000 years ago.. In the 1600’s it was considered that such an item of luxury could be afforded only by Royalty.. In Sweden, this classic began to be baked after the First World War, when cinnamon and sugar became accessible to everyone, although it wasn’t until the 1950’s that the bun had its breakthrough. Today, each Swede consumes 49g of cinnamon per year and the bun has been given its own day, October 4..