1
Mix the condensed milk with eggs, vanilla, milk and yeast mixture, flour and softened butter. Divide the dough in half.
2
Mix one half of the dough with the two chocolates melted in the milk.
3
Pour both the plain mixture and the dark and milk chocolate mixture into a buttered and floured tin to create a marbled effect.
4
Bake in a preheated oven at 180°C for 50 mins