Whip the cream to soft peak and soften the gelatine in cold water. Cook a creme anglaise using the milk , sugar and egg yolks ,making sure it is well cooked (82 ℃) . Add the gelatine to the anglaise and geadually pour the liquid onto the white chocolate, mixing from the centre to form an elastic core and the basis of a smooth shiny emulsion . Cool the mixture to 30℃ and fold with the whipped cream