This Scallop & Prawn Roulade with Sous Vide Cauliflower Puree is a luxurious and elegant dish that is perfect for special occasions. The delicate flavors of the scallops and prawns are enhanced by the creamy and velvety cauliflower puree. The roulade is made by rolling the scallops and prawns in a thin slice of smoked salmon, which adds a smoky and savory element to the dish. The sous vide cooking method ensures that the seafood is perfectly cooked and tender. Serve this dish as an appetizer or a main course for a truly impressive meal.