Bring the milk, cream, vanilla split in half and the butter to a boil. Leave to infuse for 15 min.
Preheat the oven th. 6 (180 ° C). Cut the bread into pieces.
In a bowl, whisk the sugar with the eggs until the mixture turns white.
Add the milk preparation. Remove the vanilla pod. Pour the rum.
In a cake pan, spread a layer of bread. Sprinkle with raisins and bitter orange peel. Cover with a second layer of bread slices.
Moisten with the milk preparation. Crush lightly with a fork. Add the rest of the raisins and bitter oranges. Bake for 1 hour in a bain-marie. Let cool slightly before covering with orange marmalade. Reserve 12 hours before serving.
Notes
TipYou can add dried fruits: apricots, grapes, prunes, figs ... Or 2 star anise to let infuse beforehand in a little milk.