Mix whipping cream and sugar in a high saucepan and bring to a boil at low temperature while stirring, reduce temperature and simmer until golden brown and creamy. Takes about 90 min Do not get too hot and do not boil over. After 60 minutes, cut the vanilla bean and add the pulp to the mixture.
Remove the mixture from the stove and fold in the sifted powdered sugar. Brush the grease pan of the oven with a thin layer of oil, pour the caramel mixture on it and smooth it on the spot with a greased palette. Cool the mixture for one night and cut into cubes of any size.