Heat the crème brûlée to 70°C and pour into deep plates. Store in the refrigerator.
Mix the Mon Chou with the whipping cream, stir until smooth and transfer to a piping bag with a smooth nozzle.
Coat the brick pastry with culinary butter and cut into long strips. Wrap around a stainless steel tube and bake in a 170°C oven. Store in a well-sealed container.