Chopping chocolate. Melt 25 g chocolate and oil in a hot water bath while stirring. Pour onto a piece of baking paper and spread thinly with a pallet or a large knife. Crush the coffee beans and sprinkle on the chocolate surface.
Let it set.
Cut mocha chocolate on the baking paper into narrow strips with a sharp knife. Pull off the baking parchment and put aside.
Melt 175 g chocolate in the milk in a hot water bath. Let cool for about 15 minutes. Whip the cream until stiff and quickly fold it into the chocolate. Pour cream into four glasses. Keep cool until serving.
Decorate the chocolate cream with the mocha strips.