Grated grater tomato, apple and carrot pour broth and cook until Braising, rubbing sore through a sieve and mix with the basic white sauce. Add mustard, sugar, wine, cinnamon, salt and lemon juice to taste, then the sauce boil water bath to thicken. Before serving sprinkle with black pepper and a pinch of lemon zest.The sauce can be flavored with cognac instead of wine. Sugar can be added after the caramelization or replace the juice of roasted beet.