About this recipe: This French cake is flavoured with orange blossom water. You can replace it with rum or vanilla, if you prefer. It's a relatively thin cake, so if you choose to add a charm, make sure that it's pretty flat.
To have a golden brown cake, remove from the oven after 10 minutes. Whisk one egg yolk in a bowl and brush the cake with the egg yolk. Put the cake back in the oven.