We didn't know what this thing was called either, we just thought it was pretty so we looked it up: it's a babka, it's Polish, and besides being pretty, it's reeeally good ;) Because there's no age limit for having a snack, it's a great mix of brioche and spread, simply perfect!
It's not very difficult to make, but still, we found the twisting part a bit delicate, so arm yourself with all your gentleness :D You can also find videos on the internet to see how to roll it all up!
If you don't have any spread, replace it with 100g of melted chocolate + 100g of hazelnut butter + 100g of plant-based cream.