Place the pecans on a baking tray and bake at 150°C for 15 minutes. Pour the caster sugar into a saucepan and make a caramel. Pour onto a sheet of greaseproof paper and leave to cool. Place the pecans and chopped caramel in the bowl of a blender and blend until you have a praline.
You will have some pecan praline left over after this recipe. You can store it in a sealed jar.
Melt the milk chocolate in the microwave. Add the crumbled crêpes dentelles and the pecan praline. Mix gently. Roll out between two sheets of baking paper and place in the freezer. Remove from the freezer and cut out using a pastry cutter. Place in the freezer.
Place the gelatine leaf in a bowl of cold water. In a small saucepan, heat the 70g of liquid cream with a few drops of coffee extract (to be measured according to the desired intensity). Remove from the heat and add the gelatine and melted white chocolate. Mix well and set aside. Whip the cold cream with an electric mixer. Pour in the previous mixture when the temperature is around 30°C and stir gently.
Assembly
Fill the Silikomart Essenziale 80 mould halfway with the coffee mousse, using a spoon to smooth the edges. Poach some pecan praline in the middle. Add a little more coffee mousse and finish with the pecan crisp. Place in the freezer for at least 6 hours or overnight.
The next day, remove the cakes from the moulds and immediately apply the brown velvet spray. Decorate with a chocolate coffee bean. Chill for at least 3 hours.