In a saucepan pour the 35% white cream Debic the honey, sugar, a pinch of salt and the spices, cook over a low flame.
Whip the egg yolks and add them to the mixture stirring with a wooden spoon, add the sifted flour together with the baking soda and baking powder a little at a time.
Melt the chocolate in a bain-marie in a small saucepan and add it to the mixture while continuing to stir.
Grease a rectangular plum cake mould, pour in the mixture and bake in a preheated oven at 180° for one hour.
Allow to cool before unmoulding.
When cool, cut into very thin slices and dry in the oven at 60°C.
Store until serving in a hermetically sealed tin to preserve it from humidity.