For the spray coating, melt the white chocolate and mix with the sunflower oil and both colourings. Mix with an immersion blender and pass through a fine sieve. Pour into an electric spray gun.
Remove the chocolate mousse quenelle from the blister. Use the chocolate discs as ears for the mouse – attach them with some melted chocolate.
. Put them on a tray and place in the freezer for 10 minutes. Spray the frozen quenelles with the grey chocolate on both sides.
Put them back in the freezer for 5 minutes and repeat the spraying process.
Make the mouse’s eyes and tail from black and white fondant and attach them to the frozen quenelles. Cover with cling film and leave to thaw in the refrigerator.