Heat the rum and soak the raisins in it to plump them up. Blend the yeast with the milk. Whisk the eggs with the honey, then mix with the sifted flour, melted butter and the yeast mixture, and add the soaked and drained raisins. Reserve the rum.
Butter and flour the baba moulds and fill them two-thirds full. Allow them to rise for 1 hour at room temperature and