Melt 2 bars of chocolate in hot water, add 1 and a half cups of boiling milk and mix until it thickens. Add half a cup of water. Alternate layers of chocolate mixture with squares of leftover cake in a buttered form lined with parchment paper. Let it chill in the fridge for 12 hours, remove from the mold and cut into slices, serving with whipped cream.
Melt 2 bars of chocolate in hot water, add 1 and a half cups of boiling milk and mix until it thickens. Add half a cup of water. Alternate layers of chocolate mixture with squares of leftover cake in a buttered form lined with parchment paper. Let it chill in the fridge for 12 hours, remove from the mold and cut into slices, serving with whipped cream.