6. Butter and flour a loaf pan. Pour alternately the vanilla preparation and the chocolate preparation in 4 layers all in all, beginning with the vanilla.
7. Put in the oven for 45 - 50 mn. Verify the cooking by planting the blade of a knife in the dough: it has to stand out from it hardly wet. Turn out of the tin immediately and let cool on a railing. by katia ENJOY !